Commit Graph
214 Commits
Author SHA1 Message Date
Umut CANandClaude Opus 5.5 76e8647e1b merge: tracks B+G group A
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-23 12:25:44 +03:00
Umut CANandClaude Opus 5.5 36dab4cec6 merge: tracks B+G group S
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-23 12:25:44 +03:00
Umut CANandClaude Opus 5.5 5b70533505 merge: tracks B+G group M
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-23 12:21:09 +03:00
Umut CANandClaude Opus 5.5 5388440c27 fix(task-7): rotation honoured end to end, each view dimensioned once, refusals that name their path
- rotation turns the whole sheet of views about `at` as one rigid body: the
  prims, the recorded WCS `bbox` (plus the sheet-frame `frame_bbox` the next
  view is laid out against), the detail marker, and every dimension intent
  (points, text position, and the linear measuring direction + rotation).
  Measured headless: rotation=90 at (100,100) now draws (70,100)-(100,172),
  records exactly that box, and leaves only the 2 diameter chord defpoints
  off-geometry (was 4, up to 47.5 mm away).
- dimension_part dimensions only views whose record is not `dimensioned`,
  takes `views=[indices]`, refuses a view already dimensioned by name
  (ISO 129-1), writes the flag back, places the hole table once, and refuses
  a fit no target view claims before drawing anything. A view the dimension
  layer emits nothing for (a detail) is reported in `skipped` and left
  unflagged. mech_dimension_part gains the `views` argument.
- draw_prims checks hatch_add_boundary's {"ok": False}: the hatch is removed
  and the failure raised, never left solid through the bore. An engine whose
  capability map says `hatch_edge_paths` is unsupported (the live one) is
  refused before any prim of the view is drawn.
- a view scale other than 1.0 is refused by name in draw_part and add_view
  (views are drawn full size; the scale would only have been recorded).
- add_view's collision step compares real rectangles on both axes and steps
  along the projection axis layout_origin chose, so a third-angle view is
  never shoved back onto the front view and a top view keeps its alignment.
- draw_from_spec validates `at` / `rotation` into the `parts[i]:` path and a
  transaction that cannot open is a ValueError (a ToolError at the tool).

No new ActiveX member is called: the change composes existing contract
members (dimension_linear rotation, entity_delete, capabilities()).

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-23 12:20:25 +03:00
Umut CANandClaude Opus 5 8b14d4ef8d feat(task-7): SECTION 21 - the mechanical part model as six tools
engineering/mech/draw.py is the only module in the package that touches a
backend: it turns the pure engine's primitive descriptions into entity_create_*
and dimension_* calls, places them in WCS, and writes the part model back onto
the drawing as ACADMCP_MECH XDATA on an anchor POINT. It is not a contract
member and neither are the tools - exactly like gear_draw_* and
titleblock_apply_iso_a3, it composes the generic members, so it is written once
and works on both engines by construction and no capability key is needed. No
new ActiveX call was written, so there was nothing to probe on the live seat;
measured instead that every one of the 23 backend members draw.py calls exists
on ComBackend and that ComBackend has no abstract methods left.

mech_part_draw takes one model - a turned profile or a plate outline plus typed
features - and draws its views in first-angle positions (third on request),
dimensions them and records the placement. mech_view_add reads the model back
out of the drawing and adds a side, top, section (full/half/offset/revolved) or
detail view months later without the caller re-describing the part.
mech_dimension_part lays out ISO 129 dimensions with no overlapping text,
resolves ISO 286 fits against the measured nominal, and moves the holes into a
table past a threshold. mech_hole_pattern exposes the same expansion for a
drawing that was never built from the model - with its own diameter guard,
because Hole.validate needs a part and a standalone pattern has none.
mech_part_inspect reads the payload back and never modifies the drawing.

mech_part_from_spec draws a whole sheet inside one transaction. Every part is
validated before the transaction opens, so a refusal leaves the drawing
untouched and names the path (parts[1]: segments[0].d_outer: ...), and the
rollback is shielded with the shape engineering/pid/spec.py documents: anyio
cancellation is level-triggered, so a bare await in the handler would be
cancelled before the rollback body ran and leave half a sheet inside an open
transaction.

fits goes through dimension_intents(fits=...), the API Task 6 shipped, rather
than being stamped on at draw time: that is the path that validates a key by
name and refuses a fit on a reference dimension or on a hole that moved into
the table. It is scoped per view first - a fit on segment[0] names nothing in
the end view, and refusing there would make a correct three-view sheet
undrawable - and any key no view claimed is handed back to dimension_intents so
the refusal is written in its own vocabulary.

SECTION 21 registers the six tools in the new mech pack, with alias records
(SECTIONPLANE, ARRAY plus shop-floor synonyms in English and Turkish - mil,
kademeli mil, kama, pah, kesit, gorunus), a regenerated tool inventory, the
README release snapshot at 210 tools in 24 groups, and the frozen group-size
snapshot gaining mech: 6. Lean is deliberately untouched here: spec section 11
puts three of these on the lean surface together with group G's two sheet tools,
and Task 15 makes that edit once across all four branches.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 23:17:29 +03:00
Umut CANandClaude Opus 5 bd73b3a854 fix(task-6): a reachable ISO 286 route, a tolerance schema that refuses, a reference dimension
Three review findings, all root causes in `engineering/mech/dimension.py`.

1. The ISO 286 fit path was unreachable from the module's own pipeline.
   `resolve_tolerance` resolved `intent.fit` correctly, but nothing produced a
   DimIntent carrying one: no feature and no segment has a fit, and
   `dimension_intents` constructed every intent without `fit=`. Only a
   hand-built DimIntent - which is what the tests used - reached the code, so
   the spec's `mech_iso286_on_dimension` and the `mech_assembly` benchmark's
   "ISO 286 fits on the bearing seats" had no route.

   `dimension_intents(..., fits={key: code})` now stamps the code onto the
   intent its key names, and the part's own diameters became addressable one
   at a time through the new `segment_key(i, bore=...)` -> "segment[1]",
   "segment[1].bore"; a feature's stay addressable by id. A key that names
   nothing is refused with the names that exist, a malformed code is refused
   where it is attached rather than at draw time, a fit on a reference
   dimension or on one that already carries a tol is refused, and a fit on a
   hole whose diameter moved into the hole table (which has no tolerance
   column) is refused by name instead of vanishing. Task 7's planned
   `dimension_part(..., fits=None)` passes straight through - the argument is
   additive and keyword-only, so every call written against the pinned
   signature keeps working.

   The fit also now reaches the *text*: `intent_text` expands the `<>`
   placeholder and appends the code, so `text_rects` measures the string that
   is actually drawn and a hole that already names itself ("⌀6") keeps its own
   text and gains the code.

2. An explicit tolerance was silently discarded when `tol` omitted "mode".
   `mode = tol.get("mode", "none")` and `build_dim_override(0.05, 0.05,
   "none", None)` returns `({}, None)` without raising, so a ±0.05 resolved,
   echoed its own numbers back in the payload, and drew a dimension with no
   DIMTOL/DIMTP/DIMTM at all. `DimIntent.tol` now has a schema - {"mode",
   "upper", "lower"} and nothing else - validated by `_explicit_tol`: an
   unknown key, a missing "mode", a non-dict, and deviations under a mode that
   writes none are each refused by name. The mutual-exclusion guard reads
   `tol is not None` rather than truthiness, so `tol={}` is refused too.

3. The ISO 129-1 "no measurement twice" test was vacuous and the property was
   false. The old test built the key `_dedupe` uniquifies as the last step of
   `dimension_intents`, so it could not fail; meanwhile `style="chain"` emitted
   20, 40, 15 *and* 75 as four plain DIMENSIONs. `redundant_linear` now finds
   the span that shorter ones tile end to end on the same axis and level, and
   `dimension_intents` marks it as an auxiliary (reference) dimension - the new
   `REFERENCE_FORMAT` "(<>)", which renders "(75)". The plan's own test still
   holds (the 75 is present); it is no longer a fourth plain dimension. The
   error is one-sided on purpose: a tiling that is found is real, a tiling the
   greedy walk misses leaves the dimension plain, which is the direction the
   repository's critique rule wants. Baseline and ordinate parenthesise
   nothing, and two horizontal chains at different heights are not each other's
   pieces.

Tests: the vacuous gate is replaced by four that fail against the pre-fix code
- `redundant_linear` on the shaft's plain intents returns (3,) there and ()
here; the parametrised "a tolerance is either refused or reaches the dimension
variables" gate resolves the mode-less shape to an empty DIMVAR override
there; and `fits=` is a TypeError there. `_dedupe` is now exercised through a
duplicate fed in via the view's own dims, which the collector does not
generate itself. 46 tests in tests/test_mech_dimension.py (was 23).

Live AutoCAD: no finding was measured live and no new ActiveX call was
written - this module is pure Python with no backend, no async and no DXF. A
DIMTOL probe against the running seat was attempted twice and
`GetActiveObject("AutoCAD.Application")` blocked past the ~90 s contention
window both times, so the live engine was unavailable; no scratch document was
created (the probe never got the application object) and none was left open.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 23:04:25 +03:00
Umut CANandClaude Opus 5 01213fc5f5 feat(task-6): dimension intents, ISO 286 fits and an overlap-free layout
engineering/mech/dimension.py collects what the features asked to have
dimensioned, adds the part's own sizes (chain, baseline or ordinate for the
axial lengths, a diameter per segment and per bore, the two overall sizes of a
plate), and removes the duplicates - ISO 129-1 says each dimension appears once,
and a test asserts no measurement is placed twice.

Fits and tolerances are resolved through the modules that already own them:
engineering.fits for an ISO 286 code and engineering.tolerances for an explicit
ISO 129 tolerance, including build_dim_override's sign convention (the lower
deviation is passed as the magnitude of the minus side, exactly as
server.py::_fit_to_tolerances does). A H7 bore at 40 mm resolves to +0.025/0 -
the correctness check the spec names. A fit together with an explicit tolerance,
a fit outside the authored ISO 286 range, and a fit on an intent with no
measurable nominal are each refused by name rather than guessed.

The layout is the part that had to be measured rather than asserted: every
intent's text is turned into a rectangle by the same helper the test uses, and
an intent is placed on the lowest level whose rectangle is free, with the level
pitch clamped to clear the text whatever the caller passed. The test then
asserts the placed rectangles are pairwise disjoint - including on a crowded
plate and with a deliberately too-small step. That is the same property the
repository's dim_overlap critique focus checks on the finished drawing.

The plan's layout clamped that pitch to the text HEIGHT on every axis, which is
only the stacking direction for the row of dimensions under the view. Beside the
view the levels march in x, so the extent they have to clear is the text WIDTH:
measured here, three diameter labels are 9.45 mm wide (9.45, 5.6) at a 8.0 mm
pitch, so a shaft's three segment diameters - all on the y = 0 centreline, hence
all on different levels - overlapped by 1.45 mm. The pitch and the within-level
span are now both taken per axis from the same _text_size helper text_rects
uses, which makes the disjointness a property of the algorithm rather than of
the label lengths that happened to be in the test.

Over hole_table_threshold holes the per-hole diameters leave the view and become
a table instead, grouped by diameter, thread, counterbore and depth, one tag per
group and the quantity on every row.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 22:27:09 +03:00
Umut CANandClaude Opus 5 978c1075ad fix(task-5): cut faces on the real chord, cross sections that see features, a section with no dashed cut edge
Three defects, all of them the same mistake in three places: the cut face was
built from something other than the geometry it claims to show.

1. A prismatic cut face removed a feature by its BOUNDING BOX. `Hole.removal_box`
   is a square, so the gap punched in the cut face was the full diameter
   wherever the plane passed. On the plan's 80x50x8 plate with a Ho10 hole at
   (40, 25): a plane at y=29.9 grazes the hole (true chord 1.990) and the
   section still showed an 8 mm gap through solid metal - 560.0 mm2 hatched
   against a true 624.08, a 64 mm2 error in the hatched area AND a wrong drawn
   outline. `Slot` had the same obround-as-box. Features now answer
   `cut_spans(part, p1, unit)` with their own exact chord: `_circle_chord` for a
   hole, the union of two circles and a rotated rectangle for a slot, the
   polygon's own crossings for a pocket, and an exact slab clip of
   `removal_box` as the default. `_box_span` (the corner projection, which is
   the box's shadow and not a chord at all) is gone.

2. A transverse revolved section ignored every feature and the honesty rule
   never fired. A cross section through a DIN 6885-1 keyway came out as a plain
   hatched disc with `omitted == ()` - the commonest mechanical cross section
   there is, hatched straight over the 12x5 keyway. The face is now built by
   `_transverse_face`: its radii come from `radial_profile` (so a groove, an
   undercut, a bore or an ISO 6410 internal thread is in the face already,
   which the raw segment diameters could not report), a non-axisymmetric
   feature is asked for its own `cross_section` notch record, and one the plane
   really passes through with no such record is listed in `omitted` with its
   reason rather than hatched over. `Keyway._notch` is the one calculation the
   end view and the cut face both come out of.

3. A section drew its own cut boundary as a HIDDEN (dashed) line, because the
   longitudinal branch reused `silhouette_prims` and the silhouette draws the
   bore dashed - correct for an un-cut view, wrong for a section, where that
   line IS the hatch loop's boundary. ISO 128-50 bounds a surface lying in the
   cutting plane with a continuous wide line and ISO 128-3 leaves hidden detail
   out of a sectional view; via ROLE_LAYER['hidden'] this would also have put
   the cut boundary on the HIDDEN layer in Task 7. New `section_profile_prims`
   emits the cut outline all-continuous, and `half=True` keeps the dashed bore
   on the -Y half only, which is the half a half section does not cut.

And the claim the last commit made without earning it: the hatched area and the
drawn outline are now literally one calculation. The longitudinal loop is the
*emitted* outline flattened (`_flatten_path`), so a chamfer or fillet that
substitutes a silhouette corner is cut out of the hatch exactly where it is
drawn - a 2 mm 45 deg chamfer takes its 2 mm2 off the 1000 mm2 half face
instead of being hatched over.

Eleven new tests, every one of them red on the parent commit: the hole chord at
0/4/4.9 mm off centre, a tangent plane leaving the face whole, the 45 deg slot,
the keyway cross section against its own analytic area, the feature a cross
section cannot project, the feature the plane misses, the groove read off the
profile, the continuous cut boundary, the half section's dashed half, and the
chamfered cut face.

No new ActiveX member is called: all three fixes are pure geometry in the
backend-free `engineering/mech` package.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 22:16:47 +03:00
Umut CANandClaude Opus 5 72bd17d024 feat(task-5): sections, cut faces, material hatch and detail views
engineering/mech/views.py grows the two remaining view kinds. A section's cut
faces come out of the same radial profile the silhouette does, so the hatched
area and the drawn outline are one calculation and cannot disagree: a solid
shaft's half-section loop measures exactly the sum of its segment rectangles,
and a bore closes the loop on itself rather than being hatched over.

ISO 6410's section convention falls out of the model rather than being special-
cased: an internal thread's radial_edit already raises the bore to the major
diameter, so the hatch stops there. ISO 128-3's rib rule is a flag on the
feature - a pocket marked no_section_hatch is drawn and left unhatched, while
the rest of the cut face is hatched with the part's ISO 128-50 material.

Four styles, each either implemented or refused by name with the alternative
rather than approximated: full and half on a longitudinal plane through a
revolved axis; full and revolved on a transverse plane (the annulus, flattened
at 2 degrees - 0.015% of the radius, stated in CIRCLE_SEGMENTS rather than
hidden); full and offset on a prismatic part, where through features split the
cut face and pockets reduce it to the remaining thickness. A plane that misses
the part, or that grazes an outline vertex so its crossings cannot be paired, is
refused instead of producing a guessed cut face.

Details scale a circular region of a parent view, emit the ISO 128-34 circle and
letter for the parent and the "A (5:1)" label for the detail itself, and report
every feature that falls outside the circle in omitted - the honesty rule again.

Three test assertions were corrected to the measured truth rather than the
engine bent to them, each verified by running the code:

* the ISO 6410 test asked for the whole cut-face loop's minimum to be the M20
  major (r=10). It is not, and must not be: over the 5 mm that is drilled but
  not threaded the loop closes on the real 16 mm drill (r=8). The loop is
  ((0,10),(0,25),(25,25),(30,25),(30,8),(30,8),(25,8),(25,10),(0,10)). The test
  now pins both spans, which is the convention it meant to assert.
* the transverse-annulus areas were pinned at rel=2e-4. An inscribed regular
  180-gon is exactly 1 - (n/2pi) sin(2pi/n) = 2.0307e-4 under the circle, so
  2e-4 rejects the very flattening CIRCLE_SEGMENTS declares. The tolerance is
  now 2.1e-4 and the test computes the deficit and pins it, so the number is
  derived rather than guessed. CIRCLE_SEGMENTS' docstring now states both
  figures: 0.015% radial (the 2 degree chord's sagitta) and 0.0203% of area.
* tests/test_mech_views.py pinned VIEW_KINDS == ("front","side","top"), which
  this task deliberately grows. It now pins the three orthographic kinds as the
  first three and the full five-kind tuple.

_is_longitudinal takes only the plane; the plan's signature also took the part
and never read it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 21:40:29 +03:00
Umut CANandClaude Opus 5 b2f858212f fix(task-4): the end-view occlusion rule, the double-drawn groove, the left view
Three defects in the orthographic view engine, all one missing idea: the engine
had no visibility rule and no single owner for the silhouette.

1. `_end_circles` inverted the hidden-line rule. Walking the bands from the
   viewing end it drew a circle only when its radius EXCEEDED everything nearer,
   and roled every such circle `hidden` unless it was the first band - so the one
   edge that CANNOT be occluded (a step face larger than the material in front of
   it) shipped dashed on HIDDEN, and the circle that really is covered was not
   drawn at all. `_front_max` is now the rule: an edge of radius r at station x is
   continuous when r is larger than every outer radius between x and the observer,
   dashed when it is not, and it is always drawn. Bores follow the mirror image -
   you see down a bore only while it stays at least as wide. Each distinct radius
   is emitted once, because two coincident circles are a duplicate entity.
   The same rule now roles a feature's axis-centred end-view circle, whose axial
   station comes from `removal_box`; a feature that reports none keeps its own
   verdict rather than having one guessed.

   Ground truth by ray cast along the axis of the same solid of revolution
   (segments 20x25, 40x30, 15x20; observer at +X, probe just inside each edge):
     r=10   at x=75 -> first surface x=75 -> VISIBLE  (was visible, kept)
     r=15   at x=60 -> first surface x=60 -> VISIBLE  (was HIDDEN, fixed)
     r=12.5 at x=20 -> first surface x=60 -> HIDDEN   (was not drawn, fixed)

2. Every axisymmetric groove was drawn twice - once as the notch
   `radial_profile` cuts into the silhouette, once by the feature's own
   `prims()`, which `_feature_layer` appended unconditionally. Six exactly
   coincident LINEs per grooved shaft, which is precisely what
   `critique.py::_check_duplicate_entities` matches, so premium rule 7 could
   never be met on a part carrying a retaining or O-ring groove. `_profile_owned`
   now drops a feature primitive that the body already emitted, and drops a
   revolved front view's `visible` silhouette line from any feature that edits
   the radial profile: the spec's rule is that grooves cut a notch in the
   silhouette, and the notch belongs to the one calculation. Suppression is
   "the profile already drew this", not "this feature edits the profile", so a
   blind bore keeps the bottom line the profile cannot express, and an internal
   thread keeps its ISO 6410 limit line.
   A groove straddling a step was worse than duplicated: the feature reads one
   surface radius for a span that has two, so it drew a groove floor through
   solid material and left the +Y path with four odd-degree nodes. It now has
   two - its two ends on the axis.

3. `build_view` validated `side` and put it in ctx, but the prismatic branch
   ignored it: `side="left"` returned the right-hand view, with every feature on
   the wrong side of the sheet and a symmetric outline rectangle to hide it. An
   observer at -X sees screen-right = -Y, so the feature layer is now mirrored
   about the outline's mid-Y. The top view is always seen from above and does
   not move with `side`; that is now said in the docstring and pinned by a test.

Tests: the two that pinned the inverted rule are rewritten around the ray cast,
and one of them contradicted its own name. Seven tests added, and the prismatic
side-view test's hole moved off the y=25 mirror axis, where it could not tell a
left view from a right one. Nine of them fail against the previous `views.py`
and pass against this one.

Live AutoCAD was unavailable for a SOLPROF cross-check: the running AutoCAD 2026
(pid 40068) reports Responding=False and `GetActiveObject("AutoCAD.Application")`
never returned inside 100 s, so no scratch document was created and none is left
open. No new ActiveX member is called by this change - views.py is pure.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 20:38:57 +03:00
Umut CANandClaude Opus 5 34079ad0b4 fix(task-11): hatch the cut face, not its chord, and take the scaffolding with it
draw_material_hatch's handles branch read only the traced loop's `points`
and dropped the parallel `bulges`, so a cut face bounded by an arc was
hatched as the chord polygon - exactly the failure README.md and the
comment at backends/ezdxf_backend.py:1172-1176 name. MEASURED headless on
a 40x10 box closed by a 180 degree r=20 arc: boundary_from_entities ->
area 1028.318531, draw_material_hatch -> {'ok': True, 'points': 4} and
entity_measure(hatch) -> {'area': 400.0, 'exact': True}. 628.3 mm2, 61% of
the face, silently unhatched, and the payload stated no accuracy.

entity_create_hatch takes a vertex list on both engines, so an arc edge has
to reach it as vertices; the bug was dropping the curve, not the fact of
vertices. Each bulged segment is now expanded onto its real arc by
_flatten_bulge, spaced so no chord departs from it by more than the
declared HATCH_FLATTEN_SAGITTA (0.01). Same repro after: points 53, area
1027.905195 against the exact 1028.318531 - an error of 0.413 (0.040%),
and the payload says so rather than claiming exactness: `accuracy`
"flatten_tolerance" or "exact", `flatten_tolerance`, `curved_edges`,
`area` (the polygon actually written) and `boundary_area` (the loop's own
exact area) so the two can be compared instead of trusted. `accuracy` is
decided by comparing those two numbers, so a backend that reports no
`bulges` at all is still reported approximate rather than assumed exact. A
straight-sided face reads `exact` / 400.0 as before.

The handles branch also had no area guard - the "at least three points"
refusal only ever covered `boundary` - so a LINE plus a 180 degree ARC
traced to a two-vertex loop and wrote a HATCH of area 0.0 with ok: True.
That case now hatches the real semicircle (37 points, 156.880337 of
157.079633), and a loop that genuinely encloses nothing (three collinear
segments, boundary_from_entities area 0.0) is refused by name before
anything is written: "the hatch boundary encloses no area (measured 0)".

Second: boundary_from_entities does not merely compute a loop, it *writes*
one. The traced LWPOLYLINE was left in the drawing on layer 0 and named
nowhere in the result, so the caller could neither find nor delete it, and
drawing_critique / drawing_finalize scored it against the drawing under the
layer-discipline rule. MEASURED headless on a 40x10 rectangle of four
LINEs: 4 entities before, 6 after, by_type {'LINE': 4, 'LWPOLYLINE': 1,
'HATCH': 1}, the polyline on layer '0'. After: 5 entities, {'LINE': 4,
'HATCH': 1}, and the result carries traced {'handle': '34', 'removed':
True} - the boolean is reported rather than assumed, so a delete that
failed is visible. The delete runs in a `finally:`, so the refusal paths
above do not leave scaffolding either (3 entities before and after).

Third: the module SOURCE block asserted the cutting-plane line's thin
middle was "the `center` role (CENTER, 0.25 mm)" and that the pair gave
"the ISO appearance" at 2:1. engineering/layers.py:19 defines CENTER at
0.18. MEASURED headless after draw_section_line on a fresh EzdxfBackend:
layer_list reports GEOMETRY lineweight 50.0 and CENTER 18.0, i.e. 0.50/0.18
= 2.78:1. A fabricated number in a standards SOURCE block is the one thing
these blocks exist to prevent, so the block now states the measured pair,
names the ratio as 2.78:1, and does *not* quote the standard's own
wide:narrow ratio, which this module cannot transcribe. The wrong figure in
the previous commit message (64a57d7) stands uncorrected in history; this
paragraph is the correction.

Tests (all four fail against the reviewed code, verified by re-running them
with _flatten_bulge and _discard_traced_loop stubbed back to the old
behaviour: 3 failed, and the SOURCE-block assertions checked against
HEAD:engineering/mech/marks.py -> [False, False, False]):
  - test_a_bulged_segment_is_expanded_onto_its_real_arc - every emitted
    vertex on the circle, every chord sagitta inside the tolerance
  - test_an_arc_bounded_cut_face_is_hatched_on_the_arc_not_its_chord -
    and entity_measure agrees with the payload
  - test_a_straight_sided_face_is_still_reported_exact
  - test_the_traced_outline_is_removed_and_reported_not_left_on_layer_0
  - test_a_loop_that_encloses_no_area_is_refused_and_leaves_nothing_behind
  - test_the_polygon_area_helper_is_orientation_blind
  - test_the_section_line_source_block_quotes_the_layer_set_it_draws_on -
    reads ENGINEERING_LAYERS, so the sentence cannot drift again
  - test_the_cutting_plane_line_really_lands_on_those_two_lineweights

No new ActiveX call was written, and nothing changed here can reach a live
seat: boundary_from_entities is capability-refused on COM
(backends/com_backend.py:1488, boundary_trace
FeatureCapability(False, "no_activex_member_command_only")), so the
handles branch is headless-only; the `boundary` branch is unchanged but for
the added payload keys. The live seat could not be reached to re-measure it
anyway - GetActiveObject("AutoCAD.Application") blocked without returning
on three attempts over ~370 s while acad.exe was running (sibling
contention), so the live engine was unavailable rather than absent.

server.py's hatch_material docstring now states the accuracy keys and the
traced-outline deletion; the tool summary is unchanged, and
scripts/generate_tool_inventory.py reproduces docs/tool-inventory.json
byte-for-byte (209 tools), so no registration moved.

tests/test_mech_marks.py: 25 passed (17 -> 25). Gates: ruff check clean
over the tree, ruff format clean, test_tool_registry, test_tool_inventory,
test_capability_contract, test_discovery_aliases, test_boundary_trace,
test_measure and test_release_consistency all pass. Full suite:
3351 passed, 24 skipped, 1 xfailed; the same 6 pre-existing failures
(test_benchmark_v4, test_capabilities, test_layouts_solids, test_page_setup,
test_sprint2_fixes, test_viewport_ops) verified identical with this change
stashed, and test_release_consistency.py::test_document_numbers_match_the_tree
deselected as Global Constraints instructs.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 20:12:11 +03:00
Umut CANandClaude Opus 5 bf8b3baf74 fix(task-9): put the fastener plan in projection with its elevation, and refuse a thread size that is not d
Two wrong-drawing bugs in SECTION 22.

1. _hex_points defaulted to start_deg=0, putting vertices at 3 and 9 o'clock,
   so the plan of an M12 hex head measured 18 mm (across flats) across the
   vertical while the elevation drew that same head 20.78 mm tall (across
   corners e, silhouette edges at +/- e/4 - the projection of a hexagon with
   vertices top and bottom). Place the two blocks in projection and the two
   views of one part disagree. The default is now 30 deg, named HEX_START_DEG
   and documented on both the constant and _hex_points as the convention the
   elevation is the projection of, so a future fourth caller cannot pick the
   other one by accident. The three top builders (_hex_fastener_top,
   _hex_nut_top, _socket_head_top) inherit it.

2. _thread_feature read the pitch from params['size'] via the ISO 261 table
   while drawing the geometry from params['d'], never cross-checking the two.
   feature_spec('thread', {'d': 8.0, 'length': 20.0, 'size': 'M20'}) drew an M8
   minor diameter and returned dims['pitch'] = 2.5 with ISO 261 cited as the
   source - one thread's pitch on another thread's geometry, a silent wrong
   number carrying a standards citation. A mismatch is now refused by name,
   like every other check in the module. std_feature_draw's params description
   says so.

Guard tests: the old top-view test asserted only len(points) == 6 and never a
vertex coordinate, so the orientation was untested. Added the vertex
coordinates, the plan-vs-elevation silhouette-height invariant across ISO 4014
/ 4017 / 4032, the socket screw's dk invariant, and the refused thread pair.

No ActiveX member is added or changed by either fix; both are pure geometry and
validation, so no live measurement is cited. The live AutoCAD could not be
probed for a confirmation run - GetActiveObject blocked past 150 s under
sibling contention.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 20:02:06 +03:00
Umut CANandClaude Opus 5 48eb057273 feat(task-4): the orthographic view engine - silhouette, hidden lines, layout
engineering/mech/views.py projects a part model onto a view plane and returns
primitive descriptions, so a test asserts geometry rather than a screenshot.

The one calculation everything comes out of for a revolved part is the radial
profile: the part cut into bands of constant bore and constant (or linearly
tapering) outside, with every feature's radial_edit applied. The front view is
that profile walked as a path and mirrored about the axis; the section cut face
of the next task is the same profile walked as a closed loop, which is what
stops the outline and the hatched area ever disagreeing. Chamfers and fillets do
not draw over the silhouette - they substitute their corner in it, so the
overshoot the critique focus looks for cannot be produced by construction, and a
corner edit that finds no corner is reported rather than dropped.

A band's radii are read off the segment the band's MIDPOINT lies in and the
taper is evaluated at the band's own two ends. Sampling a hair inside the band
to dodge the segment-boundary ambiguity - the way the plan's draft did - writes
the taper slope times that inset into every coordinate the silhouette is built
from: a 30 -> 10 mm cone over 20 mm then reports 14.99999 for a radius that is
exactly 15, and nothing downstream can tell that it is wrong.

The end view applies a real hidden-line rule: walking the bands from the viewing
end, a diameter larger than everything nearer than it is drawn hidden, a bore
behind material is hidden, and the near end's own circles are visible. Looking
from the left reverses it. A revolved part's top view is refused, because it
repeats the front.

Prismatic parts get the outline in true shape with corner fillets and chamfers
substituted in, and side/top thickness rectangles - the case where a hand-drawing
model reliably forgets the hidden line per through feature, which here comes out
of the feature itself.

The honesty rule of spec section 6 is enforced in one place: a feature that emits
no primitives and edits neither the radial profile nor a corner is listed in the
view's omitted tuple with its own reason. Nothing is silently dropped.

layout_origin places views in first-angle positions by default (the view from the
right goes to the left, the view from above goes below) and flips both for third
angle. It takes one additive keyword beyond the pinned signature, child, because
placing a view to the left depends on that view's own width; without it the child
is assumed the parent's size and every pinned call still works.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 19:56:04 +03:00
Umut CANandClaude Opus 5 457c53644f fix(task-3): keyway end-view arc, the machined face, and the chamfer's segment bound
Three defects in the feature catalogue, all faithfully transcribed from the
plan text and all wrong in shipped code.

1. Keyway.prims(view="side") emitted the arc the keyway REMOVES. `Arc` is CCW
   start -> end, and the emitted (right wall -> left wall) is the ~31 degree
   cap over the slot opening, not the ~329 degrees of shaft that survives it.
   Measured live on AutoCAD 2026 (Documents.Add scratch doc, closed in a
   finally): ModelSpace.AddArc(center, radius, start_rad, end_rad) -- angles in
   RADIANS, CCW start -> end -- gives ArcLength 8.098 mm for the emitted
   74.534 -> 105.466 deg and 86.150 mm for the reversed 105.466 -> 74.534 deg,
   against a 94.248 mm full circle at r = 15; StartPoint/EndPoint of the
   emitted arc are exactly the notch walls at x = +/-4. Swapped, so the arc now
   runs left wall -> right wall the long way round, and the side view's bbox
   goes from (-4, 11, 4, 15) to (-15, -15, 15, 14.457).

2. Hole and Pocket cut the plate from OPPOSITE faces in the same view frame:
   Hole ran z = 0 -> depth, Pocket z = thickness -> thickness - depth, and
   neither takes a face parameter. A plate carrying both showed the pocket
   milled from one side and the blind hole drilled from the other, silently --
   omission() returns None for both, so nothing reported it. The frame comment
   now names the machined face (v = thickness, the face the front view looks
   at), and Hole drills from it: the blind floor, the counterbore step and the
   through bore all hang down from there, as Pocket already did.

3. Chamfer.validate bounded the axial leg against the whole part, never against
   the segment the chamfer sits on. A shallow lead-in passed validation and was
   drawn straight through a shoulder at a radius that segment does not have
   (size 30 at 10 deg on a 15 mm end segment: radial 5.29 < 10 so the radial
   guard was happy, yet `before` landed at x = 45, two segments away). New
   helper _anchor_segment names the segment a corner actually cuts into -- at a
   step, the adjacent one carrying the larger radius -- and the leg is bounded
   by its length, refused by name with the step it would have crossed.

Tests: the keyway test asserted only primitive counts and two x coordinates, so
it passed with the arc reversed; it now pins the sweep, the endpoints and the
bbox. The hole test exercised only a through hole, which is symmetric; added a
blind-hole-and-pocket test that pins both to the same face, and a counterbore
test. Added three chamfer tests (two refusals, one that must still be
accepted). Each fix was mutation-checked: reverting it fails its test.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 19:48:00 +03:00
Umut CANandClaude Opus 5 84c1ef42fb feat(task-9): SECTION 22 - std_part_list, std_part_insert, std_feature_draw
engineering/mech/stdparts.py turns the Task 8 tables into real blocks. catalogue()
searches 83 transcribed parts by designation, standard, size or family;
block_spec() emits the typed primitives and DESIG/STD/SIZE/MAT ATTDEFs
block_define takes, in side/top for fasteners and ISO 8826-1 simplified /
ISO 8826-2 detailed for bearings; insert_std_part() defines the block once,
inserts it and writes the std_part ACADMCP_MECH payload the skeleton pins, so
the parts list is a read of the drawing rather than a naming convention.
Threads follow ISO 6410 - minor at 0.8 x major, a thread-length limit line to
the major, a three-quarter minor arc in the end view.

std_feature_draw() adds a thread, a DIN 509 undercut, a DIN 471/472 groove, a
DIN 332 centre hole or an ISO 3601-2 O-ring groove to geometry that already
exists. Its dimensions come from the shared standards registry, never from this
module: an absent table, a size outside coverage or a row missing a dimension is
refused by name, and the DIN 509 relief is drawn from the profile its table
publishes rather than reconstructed here. DIN 332 form R is refused outright.
An unknown designation is refused with the nearest catalogue entries; nothing is
drawn approximately.

SECTION 22 registers the three tools in the new mech pack, with alias records
(INSERT plus shop-floor synonyms in English and Turkish), a regenerated tool
inventory, the README release snapshot at 207 tools in 24 groups, and the frozen
group-size snapshot gaining mech: 3.

Two plan corrections, both verified by running the code:

* the plan's @cad_tool summaries for std_part_insert (118 chars) and
  std_feature_draw (130) overran discovery.serialize.MAX_SUMMARY_CHARS = 110, so
  tests/test_tool_registry.py::test_no_authored_summary_is_long_enough_to_be_truncated
  failed - they would have shipped rendered as "...". Both are shortened to 99
  and 104 characters with the same content.
* the plan's file list omitted tests/test_tool_packs.py, which pins the pack
  registry, the tool_packs report and the group count. It now carries MECH_TOOLS
  and distinguishes ALL_PACKS (declaration order, what "available" reports) from
  ALL_PACKS_ENABLED (sorted, what "enabled" reports) - those two lists stopped
  being the same list when "mech" was appended after "settings".

No new ActiveX member is called: the module drives block_list / block_define /
block_insert / entity_set_xdata / entity_create_* only. The COM path was still
executed live once on AutoCAD 2026 in a scratch document created and closed by
the probe: the bolt block defined with layers CENTER+GEOMETRY, attributes read
back as DESIG/STD/SIZE/MAT = ISO 4014 - M12x60 / ISO 4014 / M12x60 / 8.8, the
ACADMCP_MECH std_part payload round-tripped through entity_get_xdata,
STD_ISO_15_6205_SIMPLIFIED inserted, and the M20 thread's three primitives
landing on GEOMETRY.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 19:26:49 +03:00
Umut CANandClaude Opus 5 64a57d74a0 feat(mech): SECTION 23 completes with centre_marks, section_line, hatch_material
centre_marks draws ISO 128-23 centre marks or full centre lines and reads
each circle's real centre and radius back out of the drawing through
entity_get instead of being told them - a radius restated from memory is
the silent wrong number this repository keeps refusing to ship. A handle
that is not a CIRCLE or ARC, and a circle in a plane tilted out of WCS XY
(which has no radius in this frame), are both refused by handle before
anything is written. The dash proportions are not transcribed here: the
prims are plain lines on CENTER, whose linetype already carries them.

section_line draws the ISO 128-40 cutting-plane line - wide segments at
the ends on GEOMETRY, the thin long-dash-dot middle on CENTER, an arrow at
each end whose head sits on the line end and points the way the section is
viewed, the same letter beyond both arrows - and returns the five-key
plane dict {p1, p2, label, direction, style} that mech_view_add(kind=
"section") consumes, so the label on the plan and the label on the view
are the same string by construction. A viewing direction parallel to the
plane is refused rather than drawn.

hatch_material hatches through standards.materials.hatch_for, so the
ISO 128-50 map and its refusal stay in one place; scale multiplies the
material's own pattern scale and angle replaces its angle. An unknown
material is refused with the list before any entity is written.

DEVIATION - one defect in the plan's own draw_material_hatch, fixed here
with two tests that fail against the plan's code. It called
entity_create_hatch with ROLE_LAYER["hatch"] without creating that layer,
the same omission review found in Task 10's draw_annotation_prims.
MEASURED live on AutoCAD 2026 (probe: GetActiveObject, Documents.Add(),
doc.Close(False) in a finally): on a scratch document whose layer table is
['0'], msp.AddHatch(0, "ANSI31", False) + AppendOuterLoop + Evaluate()
leaves the AcDbHatch in model space, and the very next statement
hatch.Layer = "HATCH" - which is the one line _apply_entity_attrs runs -
raises com_error (-2147352567, ..., 'Key not found', ..., -2145386476);
model space then still reports [('AcDbHatch', '0')] and the layer table is
still ['0'], so the refusal leaves an orphan hatch on layer 0. After
doc.Layers.Add("HATCH") the same assignment succeeds. drawing_open runs no
bootstrap, which is exactly when a cut face has no HATCH layer to land on.
draw_material_hatch now calls ensure_annotation_layers before creating the
hatch and reports layer / layers_created, as draw_annotation_prims does.
The whole task re-measured live afterwards through ComBackend on a fresh
scratch document (layer table ['0']): hatch_material -> {'ok': True,
'handle': '82', 'pattern': 'ANSI31', 'layer': 'HATCH', 'layers_created':
['HATCH']} with the entity read back as HATCH on HATCH; centre_marks on a
live CIRCLE r=12.5 -> sources [{'handle': '84', 'center': [80.0, 0.0],
'radius': 12.5}]; section_line -> 9 entities and the five-key plane; layer
table after ['0', 'CENTER', 'GEOMETRY', 'HATCH', 'TEXT']; document closed.

tests/test_mech_marks.py: 17 passed. Gates: ruff check clean, inventory
regenerated to 209 tools, test_tool_registry (engineering 12 -> 15, total
206 -> 209), test_discovery_aliases, test_tool_inventory,
test_capability_contract and test_release_consistency all pass. Full
suite: 3343 passed, the 6 pre-existing failures verified identical with
this change stashed, and
test_release_consistency.py::test_document_numbers_match_the_tree
deselected as Global Constraints instructs.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 19:25:13 +03:00
Umut CANandClaude Opus 5 c607e75b75 fix(task-10): ensure annotation layers live, and put the weld symbols and their dimensions where ISO 2553 puts them
Three blocking review findings in engineering/mech/annotate.py.

1. draw_annotation_prims assigned ROLE_LAYER[role] without creating the
   layer. EzdxfBackend._apply_attrs adds a missing layer; ActiveX does not.
   MEASURED live on AutoCAD 2026 (probe: GetActiveObject, Documents.Add(),
   doc.Close(False) in finally): on a scratch document whose layer table is
   ['0'], draw_surface_texture(ComBackend(), at=(0,0), ra=3.2,
   machining='required', lay='perpendicular', allowance=0.5) raised
   "AutoCAD COM error (-0x7ffdfff7)" and left one orphan AcDbLine on layer 0
   — a partial write with no rollback, on exactly the foreign-drawing path
   the spec names (drawing_open runs no bootstrap). The same probe after the
   fix: {'ok': True, count 6, 'layers_created': ['DIM','TEXT']}, model space
   ['AcDbLine' x4 on DIM, 'AcDbText' x2 on TEXT], layer table ['0','DIM',
   'TEXT']. New helper ensure_annotation_layers() creates every target layer
   up front, before the first entity, with its ENGINEERING_LAYERS colour /
   linetype / lineweight; the result reports layers_created.

2. side='both' drew the two elementary symbols 0.4h apart — the other-side
   one still stood on the (correctly omitted) identification line, so a
   double-V butt weld came out as two detached halves that were not even
   symmetric about the reference line. ISO 2553 places them back-to-back on
   the continuous reference line: the other-side baseline is now 0.0 when
   there is no identification line. tests/test_mech_annotate.py asserted the
   wrong apex (-0.4*h), so the gate certified the defect; that test is
   rewritten to assert the mirror pair, plus a double-fillet case.

3. For side='other' the size and length were written above the reference
   line while the symbol hung below the identification line — 'a6' sat where
   an arrow-side throat dimension sits, on a joint with no arrow-side weld.
   Both texts now sit beside their own symbol (0.25h clear of the line it
   stands on, on the symbol's side). New test covers side='other' with size
   and length, and pins arrow/both unchanged.

All five new or rewritten tests fail against the pre-fix module (the layer
one with the measured 'Key not found' refusal, via a fake that models only
that measured behaviour) and pass after. tests/test_mech_annotate.py: 29
passed. Full suite: 3326 passed, 6 pre-existing failures unrelated to this
change (verified identical on the branch tip with the change stashed),
test_release_consistency.py::test_document_numbers_match_the_tree
deselected as instructed. No tool registration changed, so
docs/tool-inventory.json regenerates byte-identical.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 19:15:33 +03:00
Umut CANandClaude Opus 5 ac6c4075ba feat(task-3): the feature catalogue and its standards tables
engineering/mech/features.py is the nineteen typed features of spec section 5,
each answering the same four questions - is my placement legal, what do I
contribute to this view, to a cut face, and what dimension do I want - plus the
five structural hooks the view engine needs: removal_box, radial_edit,
corner_edit, outline_edit and omission. Pure arithmetic; a test asserts emitted
primitive tuples, not a screenshot.

Nothing restates a table the repository already owns: Keyway takes its width
and depth from engineering.keyway (DIN 6885-1) and is refused by name outside
that table's bore range; GearTeeth takes its outline from engineering.gear's
involute generator and is refused when its tip diameter disagrees with the
segment it sits on.

standards/threads.py transcribes ISO 261 Table 1 and Table 2 - first-choice
M1.6-M64 plus second-choice M14/M18/M22/M27/M33/M39/M45/M52/M60 - and computes
ISO 724's basic minor and pitch diameters from ISO 68-1's own formula, pinned
against the published values (M20x2.5 -> 17.294 / 18.376). The remaining
second-choice diameters, every third-choice diameter and fine pitches below M8
are not transcribed and are refused by name, never interpolated. The drawing
rules are ISO 6410: minor at 0.8 x major, a thread-length limit line across the
major, a three-quarter circle in the end view, and an internal thread whose
section hatch runs to the major diameter.

standards/{undercuts,rings,centres,orings}.py ship DIN 509, DIN 471/472,
DIN 332-1 and ISO 3601-2 with their SOURCE, their row-key contract and an
**empty** row set. That is deliberate and is the track's table rule taken at its
word: a row that could not be verified against the standard is not shipped,
because a wrong relief depth or groove diameter is a wrong workshop drawing
while a narrow table is merely narrow. Every lookup is refused by name and says
what to transcribe and where; the features accept explicit dimensions so the
geometry is fully exercised, and DIN 332 form R is refused outright rather than
approximated by the straight 60 degree cone of forms A and B. Filling any of
these tables later is a data edit with no code change, and a shape test already
fails any row that lands without a column the drawing code reads.

Three deviations from the plan text, each measured rather than assumed
(the merge agent should keep exactly one copy of the first):

1. standards/__init__.py (Task 1, on main) refused a registration with no rows
   ("registered no rows"), which would have made the four not-transcribed
   tables impossible to register at all - and registering them is what keeps a
   later transcription a data edit. register() now refuses a rows argument that
   is not a dict and accepts an empty one; two tests in tests/test_mech_standards.py
   pin both halves. No existing test asserted the old refusal.

2. ORingGroove's housing kind is carried by `housing`, not `kind`. A dataclass
   field named `kind` overwrites the discriminator _Base.to_dict() writes:
   measured, Probe(id='og').to_dict() == {'kind': 'radial', 'id': 'og'}, so
   feature_from_dict would then refuse its own payload as an unknown feature
   kind and no part carrying an O-ring groove could round-trip through XDATA.
   A new test pins the round trip.

3. The plan's end-chamfer test asserted after == (75.0, 10.0) - the corner
   itself - and before == (72.0, 8.268), a point on neither surface. The real
   edit is before (72.0, 10.0) on the cylinder and after (75.0, 8.268) on the
   end face, consistent with the 45-degree start chamfer the same file pins.
   The test was corrected to the measured geometry; the behaviour is unchanged.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 19:12:00 +03:00
Umut CANandClaude Opus 5 6024723d6b fix(task-8): pin every transcribed standards row, not a sampled subset
The module docstring claimed "every value asserted here is a named row of a
named table", but the converse did not hold: 27 of the 83 shipped rows had a
dimension no test compared against a literal. ISO 4014/4017 M5 (s,k), ISO 4032
M5 (m), ISO 7089 M5 (d1,d2,h), ISO 4762 M4/M6/M10/M16 (dk,s,b) and D/B for 20
of the 33 ISO 15 bearings were constrained only by inequality tests (series
growth) and by the bore-number rule - never by the transcribed number. For a
task whose worst failure is "a standards table row that is not in the
standard", those rows were exactly where such a row would hide.

Measured before the fix with a pytest plugin that rewrote five rows in memory
(M5 hex bolt s=k=99, M5 nut, M5 washer, M16 socket screw dk=s=b=99, 6307 as
78x20 instead of 80x21): 32 passed in 0.07s. All five now fail.

Each of the five tables is pinned by an ISO*_ROWS dict literal carrying every
dimension of every shipped size, parametrized one case per size/designation,
plus a completeness test asserting the table's key set equals the literal's -
so a row added later without a pin is red too (verified: a fabricated M14 head
and 6011 bearing fail the completeness gate). 32 -> 93 tests, 0.06 -> 0.13 s.

No production code changed; no ActiveX member is involved, so no live probe was
required for this finding.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 19:07:53 +03:00
Umut CANandClaude Opus 5 a4ce46ba9b feat(mech): SECTION 23 opens with surface_texture and weld_symbol
ISO 1302:2002's seven transcribed symbol-proportion rows (text height ->
line width d', short-leg height H1, minimum height H2) drive the 60 deg
vee, the machining-required bar at H1, the machining-prohibited circle
inscribed in the vee, and the all-around circle at the kink; the Ra/Rz
values, the process, the lay symbol and the machining allowance land
around the extension line, which grows with the widest of them. A text
height outside the seven rows is refused by name rather than
interpolated, and ISO 1302 is accepted as an alias designation for
drawings still issued under it - the graphical symbol is the same one.

ISO 2553:2019's reference line, dashed identification line (omitted for a
symmetrical weld, as the standard permits), size written before the
symbol, length and pitch written after it, field-weld flag, all-around
circle and process tail. Six elementary symbols are transcribed - square,
single-V, single-bevel, single-U, single-J, fillet. The rest of the
elementary table is deliberately not shipped: a weld kind outside the six
is refused with the list of the six, because a guessed weld symbol is a
wrong instruction to a welder.

Both tools place the symbol on a plain leader - a line plus an arrowhead
with the proportions the backend's own mleader already draws - rather
than through leader_create_mleader, which refuses empty text and would
hang an MTEXT label off every symbol.

Proportions neither standard dimensions (the all-around circles, the
flag, the identification line's dashes, the text pitch and the character
width estimate) are named constants documented as this implementation's
declared choices, never as transcribed values.

No new ActiveX member is called: both tools compose LINE / ARC / CIRCLE /
LWPOLYLINE / TEXT through the entity-creation contracts both engines
already implement, so no live COM probe was needed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 18:55:57 +03:00
Umut CANandClaude Opus 5 49b972f007 feat(task-8): ISO fastener and ISO 15 bearing tables, transcribed and pinned
engineering/mech/standards/fasteners.py carries ISO 4014:2011 / ISO 4017:2014
head dimensions (s, k), ISO 4032:2012 nut heights, ISO 7089:2000 washer
d1/d2/h and ISO 4762:2004 socket head cap screws, plus the ISO 261:1998 coarse
pitch column. bearings.py carries the ISO 15:2017 deep groove boundary
dimensions for 6000-6010, 6200-6210 and 6300-6310.

Only the ISO 261 first-choice sizes ship. M14/M18/M22/M27/M33, everything above
M36 (above M24 for ISO 4762), the 618x/619x/16xx bearing series, bore numbers
above 10 and every suffixed bearing variant are refused by name rather than
interpolated: a narrow table is merely narrow, a wrong row ships a wrong
workshop drawing. Across-corners e is derived geometry (2s/sqrt(3)), so no e
column had to be transcribed at all, and the ISO 8826-1 cross and ISO 8826-2
element-symbol fractions are declared drawing conventions, not table values.

No ActiveX member is called by this task, so no live AutoCAD probe was needed;
the two modules are pure tables and pure arithmetic.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 18:53:17 +03:00
Umut CANandClaude Opus 5 04d269318a feat(task-2): the mechanical part model - RevolvedPart, PrismaticPart, build_part
engineering/mech/part.py is the model the whole track draws from: a revolved
stack of segments along +X, or a closed prismatic outline plus a thickness, each
carrying a list of typed features. Pure arithmetic - no backend, no async, no
DXF - which is what lets the view engine be tested without a drawing.

Every refusal fires before anything is drawn and names the offending path the
way pid_from_spec does: a non-finite or non-positive number as
segments[2].d_outer, a bore that is not smaller than its outside (a bore that
changes diameter is two segments), an outline with fewer than three distinct
vertices, an outline that crosses itself (engineering.measure.is_self_intersecting
- the shoelace cancels crossed lobes rather than failing, so a bowtie would
otherwise measure 0.0), an unknown material, an unknown segment key, a duplicate
feature id.

Two gates are the reason this is a model rather than a dict: a feature whose
placement is off the part is refused by its own name and by the range it missed,
and two features that would remove the same material are refused with both names
and the overlapping box. Neither is clamped.

part_to_dict round-trips through build_part, which is what lets mech_part_draw
write the model onto the drawing as ACADMCP_MECH XDATA and mech_view_add read it
back months later without the caller re-describing the part.

Two fixes to the plan's own code and test list, both recorded in deviations:
_features_from imported engineering.mech.features unconditionally, so a
featureless part - every fixture in this module, and both round-trips - died on
ModuleNotFoundError until Task 3 lands; the import now happens only when there
is a feature dict to build. And the plan's test file omitted
test_a_duplicate_feature_id_is_refused while its own gate deselects it by name,
so the duplicate-id refusal the commit message claims went unpinned; the test is
written here and Task 3 turns it green.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 18:52:39 +03:00
Umut CANandClaude Opus 5 2bb8044144 feat(mech): shared foundation - primitives, XDATA codec, standards registry, ISO 128-50 materials
engineering/mech/ opens with the four modules every track-B/G branch imports,
so the four worktrees can be cut from this commit and none of them has to
invent a name the others will conflict with.

- primitives.py: the typed descriptions the pure modules emit (Line, Arc,
  Circle, Poly, HatchArea, Text, DimIntent) with bbox / translate / rotate /
  scale, and ROLE_LAYER - the one place an ISO 128 line role becomes a layer
  name, so no module hardcodes a layer. The arc bbox sweeps its quadrants: a
  0-180 arc reports y=+r, not its endpoints, which is what keeps the view
  layout from stacking two views on top of each other.
- xdata.py: the ACADMCP_MECH codec in Track A's shape - a 1001 application
  marker, 1000 chunks of at most 255 ASCII characters, the 16 KB per-entity
  ceiling enforced before anything is written, and a foreign application, a
  corrupt chunk stream, a wrong version or an unknown kind refused with
  ValueError instead of decoded into something plausible.
- standards/__init__.py: the table registry. A size outside the coverage is
  refused against the coverage; a size inside it that is not a listed row is
  refused against the rows. Nothing is interpolated, an ambiguous variant is
  never resolved by taking the first row, and a registration whose SOURCE does
  not name the table it was transcribed from is refused.
- standards/materials.py: the section-hatch map for nine materials. ISO
  128-50 standardises only the general hatching (narrow continuous lines at 45
  degrees) - that is acadiso.pat ANSI31 and what engineering/gear.py already
  draws for steel. The distinguishing symbols are ASME Y14.2M's section lining
  as shipped in AutoCAD 2026's acadiso.pat, read off the installed file; cast
  iron's departure from ASME and the absence of any mechanical symbol for
  concrete and wood are stated in the rows themselves. Angles are 0.0 because
  the patterns already carry 45 degrees, and the two architectural patterns'
  scales are derived from the ANSI31 line spacing and recomputed by the test
  rather than chosen.

No tool is registered here.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 17:04:59 +03:00
Umut CANandClaude Opus 5 a8482a5f0d docs(spec): align tracks B+G with the written plan
The five gaps the plan's reconciliation found, each resolved in the spec:
part placement lives in draw_part(at=, rotation=) so the dataclasses carry no
origin; engineering/sheet/refs.py is gone with the contract correction;
image_attach takes no clip and titleblock_apply no position (the ISO 7200
corner is fixed by the standard) — both recorded as out of 1.6; balloon_add
places one balloon per call against the item numbers bom_extract already
assigned.

Records the four feature tables that ship empty (DIN 509, DIN 471/472,
DIN 332-1, ISO 3601-2): no row could be verified against the standard here, so
the structure, the row-key contract and the refusal ship without rows, and the
features draw from explicit dimensions until the tables are transcribed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 16:52:23 +03:00
Umut CANandClaude Opus 5 5497dc01d9 docs(plan): tracks B+G — 16 TDD tasks in five groups
Assembles the skeleton and the five drafted parts into one plan, Task 1
through Task 16, each a TDD task with its failing test, its implementation
and its gate.

Groups:
- (main) Task 1 — primitives, the ACADMCP_MECH codec, the standards registry
  and the ISO 128-50 material map; the shared foundation the four branches
  all consume.
- M (Tasks 2-7) — the part model, the feature catalogue with its DIN/ISO
  tables, the view engine (orthographic, then sections and details),
  dimensioning, and SECTION 21's six tools.
- S (Tasks 8-9) — the ISO 4014/4017/4032/7089/4762 and ISO 15 tables, and
  SECTION 22's three tools.
- A (Tasks 10-11) — ISO 21920-1 surface texture, ISO 2553 welds, centre
  marks, the ISO 128-40 cutting-plane line and the material hatch:
  SECTION 23's five tools.
- G (Tasks 12-14) — ISO 5457 frames and ISO 7200 title blocks A4-A0,
  revisions, the ISO 7573 parts list and ISO 6433 balloons, xrefs, images,
  data extract and DWG: SECTION 24's eleven tools and the four contract
  members.
- F (Tasks 15-16) — the six mech_* critique focuses, the mech pack, lean,
  aliases and golden queries; then the v5 benchmark, the correctness checks,
  the live COM smoke and the docs.

Interface pass over the assembled file: View.dims is tuple[DimIntent, ...] as
the skeleton pins it; every XDATA writer calls Task 1's to_values rather than
re-deriving the chunk split from encode; stdparts' five standard features are
STD_FEATURE_KINDS so they do not collide with features.FEATURE_KINDS; the
revision block carries its own ACADMCP_SHEET_REV application instead of a
fourth ACADMCP_MECH kind that the pinned KINDS would refuse; and Task 16
states 39 correctness checks, which is what it registers.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 16:50:33 +03:00
Umut CANandClaude Opus 5 c97be8fc40 docs(plan): tracks B+G skeleton — 16 tasks in five groups, interfaces pinned
The header, global constraints, file structure, the interface block every task
builds against, the group/ownership table and the merge notes. Task sections
are drafted next.

Also corrects the spec's architecture section: the engineering tools compose
the generic contract members the way gear/keyway/titleblock already do, so only
four operations (xref_attach, xref_manage, image_attach, drawing_export_dwg)
need contract members and an implementation per engine.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 14:56:37 +03:00
Umut CANandClaude Opus 5 5ff66b641f docs: tracks B+G (mechanical 2D and the sheet standard) design spec
One part model — a revolved or prismatic profile plus typed features — and one
view engine that projects it into front/side/section/detail views with hidden
lines, cut faces and dimensions, instead of a generator per part shape. Around
it: the standard-parts catalogue as code inserted as blocks with attributes,
the ISO annotation symbols, and the sheet standard (ISO 5457 frames A4-A0,
ISO 7200 title blocks, revisions, ISO 7573 parts list, balloons, xrefs, DWG).

25 tools in four sections, new pack `mech`, three capability keys, six mech_*
critique focuses, benchmark task `mech_assembly` and six correctness checks.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 14:45:24 +03:00
Umut CANandClaude Opus 5 39e6e2f9e4 docs(settings): track E shipped — CLAUDE.md sections 18-20, README, changelog with the live COM smoke record
CLAUDE.md gains items 18-20 (styles, page setup & templates, environment),
the grown drawing_settings facade on item 11, lean 55 / 52 and
TOOL_PACKS=all|core,pid,settings, and three conventions: layer states are
ours (ACADMCP_LAYERSTATES XRECORD, mode "xrecord"), page-setup evidence is
the PDF's own /MediaBox, nothing interprets coordinates in UCS.

README token table re-measured on this tree with benchmarks/token_suite.py
(ratio/v1 estimates): full 199 tools / 59,315 tokens, core,settings 190 /
55,593, core 168 / 48,825, lean 55 / 16,360, search 2 / 356; corpus
re-derived from discovery.aliases: 186 AutoCAD command names, 933 synonym
phrases, 204 tools. Styles & standards row, page setup & templates row,
final environment wording, and "Known limitations of the settings track".

CHANGELOG Unreleased: the track E intro, Added (styles, page setup &
templates, environment, drawing_settings growth, benchmark evidence),
Fixed (the Track A hardening list), Changed (three groups, packs, measured
idle cost, release snapshot 204 · 8 · 5 · 3284). Spec status: implemented.

Where the plan's text and the tree disagreed, the tree wins:
mleaderstyle_create is implemented on both engines through the
ACAD_MLEADERSTYLE dictionary and no `mleaderstyle` capability key exists
(spec §4, capability maps), so the docs say so instead of calling it
ezdxf-only; the Task 7 fix (tolerant ACADMCP_PID payloads, crossings
tested against the arc) joins the hardening list the plan left it out of.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 13:38:14 +03:00
Umut CANandClaude Opus 5 18c7c69da6 fix(task-25): page_setup_truth and settings_pdf_mediabox_a3 move the sheet to ANSI B before proving A3
A fresh Layout1 is already ISO A3 landscape (ezdxf R2018 default: 420 x 297,
plot_rotation 0), so an A3-only /MediaBox read-back passed with
page_setup_apply stubbed to a no-op: the A/B gate row and the v4 matrix task
could not fail on the setter. Both now apply ANSI B (432 x 279, a size no
fresh document has; spec section 9 names it) and read that PDF first, then
apply ISO A3, read its PDF, and require the setter's changed.size_mm to have
moved from B to A3. The stub fails at the first PDF.

The moved-sheet comparison is +/-0.5 mm, the spec's tolerance, not exact:
measured live on AutoCAD 2026 (scratch Documents.Add(), closed unsaved), the
COM engine reports ANSI B as 431.8 x 279.4 and the DWG To PDF.pc3 file's
MediaBox as 431.8 x 279.4 then 420.158 x 297.039 for A3; the task passes
there with changed.size_mm [[431.8, 279.4], [420.0, 297.0]]. Headless it is
[[432.0, 279.0], [420.0, 297.0]].

tests/test_benchmark_v4.py gains the mutation test the finding describes
(setter stubbed -> both rows must fail; both passed on the old code) and a
run of the gate row itself; the headless task test asserts the B stage.
README rows and the tasks_v4 docstring say what the task now does; the README
collected-tests figure follows the two new tests (3282 -> 3284). The
regenerated A/B report against v1.5.1 is byte-identical (26 -> 32/32).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 13:27:17 +03:00
Umut CANandClaude Opus 5 c2942d3c94 bench: matrix v4 adds page_setup_truth; correctness suite grows to 32 with three settings checks (A/B vs v1.5.1: 26 -> 32 / 32)
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 13:07:31 +03:00
Umut CANandClaude Opus 5 02dbb133b5 feat(settings): live COM smoke on AutoCAD 2026 builds the five .dwt twins and records the run
scripts/smoke_settings_com.py --build-dwt exited 0 on AutoCAD 2026 (25.1s),
2026-09-22: five templates/*.dwt written through drawing_template_save
(SaveAs code 66, each file opens with AC1032), page setup plotted and the
PDF's own /MediaBox read back as 420.158 x 297.039 mm, iso_a3_mech.dwt
reopened as source "bundled" with ISO-25 current, layer state / named view /
UCS / preferences / SummaryInfo / prompt line all through the COM engine.
The record is in CHANGELOG.md under Unreleased. The smoke keeps a ledger of
the documents it opens and closes them on the way out, so a failed run never
leaves scratch documents on the operator's seat. Two of its expectations
were corrected to the merged tree: mleaderstyle_create is implemented on COM
(spec: no `mleaderstyle` key), and plot_style_list marks catalogue rows with
`installed`. --interactive was not run unattended on the shared seat (an
unanswered GetPoint holds the command line); Task 23 measured the pick live.
*.dwt / *.dwg are binary in .gitattributes; AutoCAD's plot.log is ignored.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 13:07:31 +03:00
Umut CANandClaude Opus 5 b54271f4ac fix(com): four live defects the settings smoke measured on AutoCAD 2026 — rejected calls after a document switch, typelib spelling of color/Lineweight, narrowed layer-state dictionary, layer 0 Freeze put
Measured 2026-09-22 by scripts/smoke_settings_com.py --build-dwt against the
running AutoCAD 2026 (25.1s), each on a scratch Documents.Add() document:

1. RPC_E_CALL_REJECTED (-2147418111) on Documents.Count straight after
   Documents.Open, after Close(False) inside document_close, and in
   _ensure_document_state: AutoCAD's own message filter refuses incoming
   calls while it is still switching documents. pywin32 exposes no
   CoRegisterMessageFilter, so _wait_out_rejected_call waits the window out
   for read-only callables (0.25 s -> 1 s pauses, 20 s budget, inside
   COM_CALL_TIMEOUT) at those sites and after Documents.Add/Open; any other
   com_error is not retried.
2. layer_list raised "'IAcadLayer' object has no attribute 'Color'. Did you
   mean: 'color'?": acax25enu.tlb spells IAcadEntity/IAcadLayer `color` and
   `Lineweight`. Late-bound dispatch resolved .Color/.LineWeight
   case-insensitively; with a makepy cache present (this machine's gen_py was
   regenerated on 2026-09-17, and every object a method returns is then a
   generated wrapper) the lookup is exact. All 17 sites now use the typelib
   spelling, which works on both wrappers; the fakes model the measured names.
3. layer_state_restore raised "'IAcadObject' object has no attribute
   'Count'": Dictionaries.Item and IAcadDictionary.Item are declared
   IAcadObject* (the narrowing _com_unnarrow already handles for MLEADER
   styles). The save path went through the typed Dictionaries.Add, so only
   the reopen paths failed. Both now un-narrow; the fakes narrow like pywin32.
4. The Freeze put on layer 0 raises 'Invalid layer' whatever the value, even
   False while thawed (color/Linetype/Lineweight/Plottable/LayerOn/Lock/
   ActiveLayer all fine on it), so a state saved with 0 current restored with
   two warnings and 0 unapplied. Freeze is written only when it changes the
   layer.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 13:07:31 +03:00
Umut CANandClaude Opus 5 0514f8f15d chore(templates): rebuild the five bundled DXFs on the merged tree (styles via dimstyle_create/textstyle_create, iso_a1_arch annotation scale 1:50)
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 12:40:47 +03:00
Umut CANandClaude Opus 5 d072df9fd4 fix(task-24a): apply_standard decides each unit write on a read taken after the dimension style switch
f7528b2 moved the five unit reads of apply_standard ahead of the style
stage so a refused read is a refusal with nothing written -- and then
decided the writes on those reads. Making a dimension style current
restores every DIM* variable from the style (ezdxf: _sync_header_to_dimstyle
on dimstyle_set_current; AutoCAD: ActiveDimStyle), so on a drawing whose
ISO-25/ANSI already carried another scale the gate read (1.0) equalled
the target, the DIMSCALE write was skipped and the drawing ended at the
style's scale while the report said `changed: {}` -- against the spec's
"LTSCALE 1, DIMSCALE 1" and the tool docstring. The pre-f7528b2 loop ran
after the switch and got this right; this is a regression of f7528b2.

The gate read stays (readable before anything is written); each variable
is read again after the style stage and the write is decided on that
value, so `changed` says what the write moved.

Measured on the running AutoCAD 2026 (25.1s, 2026-09-22, scratch
Documents.Add(), Close(False), real ComBackend after connect()):

    ISO-25 modified to DIMSCALE 2.0 (dimstyle_modify -> {'DIMSCALE': [1.0, 2.0]}),
    Annotative current, doc.GetVariable('DIMSCALE') -> 1.0
    before: apply_standard(iso, layers=False)
            -> {'changed': {}, 'applied': True}; ActiveDimStyle ISO-25;
               doc.GetVariable('DIMSCALE') -> 2.0
    after:  -> {'changed': {'DIMSCALE': [2.0, 1.0]}, 'applied': True};
               ActiveDimStyle ISO-25; doc.GetVariable('DIMSCALE') -> 1.0

ezdxf, same setup (dimstyle_create ISO-25 {DIMSCALE: 2.0}, Standard
current): before `{'INSUNITS': [6, 4]}` and DIMSCALE 2.0 afterwards;
after `{'INSUNITS': [6, 4], 'DIMSCALE': [2.0, 1.0]}` and DIMSCALE 1.0.

Tests: one regression per engine (both fail on the f7528b2 apply.py);
test_com_apply_standard_creates_both_styles_and_sets_units now pins the
gate reads first *and* the re-read-then-write sequence after CopyFrom,
instead of enshrining the stale-read order.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 12:37:33 +03:00
Umut CANandClaude Opus 5 f7528b2fa5 fix(com): every system variable is read and written on the ActiveX document, not the Application
AcadApplication has no GetVariable/SetVariable members; they live on
AcadDocument. Measured on the running AutoCAD 2026 (25.1s, 2026-09-22,
scratch Documents.Add(), Close(False)):

    hasattr(app, 'GetVariable')  -> False
    hasattr(app, 'SetVariable')  -> False
    app.GetVariable('INSUNITS')  -> AttributeError: ... IAcadApplication
                                    instance ... has no attribute 'GetVariable'
    doc.GetVariable('INSUNITS')  -> 4
    doc.GetVariable('MEASUREMENT') -> 1
    doc.GetVariable('FILEDIA')   -> 1; doc.SetVariable('FILEDIA', 0) -> None,
                                    reads back 0, restored to 1
    doc.GetVariable('AUDITCTL')  -> 0, 'CMDACTIVE' -> 0, 'USERS1' -> ''

Fifteen call sites in backends/com_backend.py still went through the
Application inside `try/except ... log.debug`, so on a live seat they
silently degraded: MEASUREMENT defaulted every seat to metric,
drawing_info reported units from a failed INSUNITS read, drawing_audit
never set AUDITCTL, the CMDACTIVE guards of system_run_command /
system_run_lisp never fired and run_lisp never read USERS1 back. All are
rerouted through `_acad_doc()`; the try/except stays only where an
optional read is defaulted (INSUNITS -> "Unknown", AUDITCTL absent on a
host that lacks it, USERS1 after the expression ran) and the log line
says so.

Linetype loading, measured the same way: `SendCommand("_-LINETYPE _LOAD
CENTER acadiso.lin\n\n")` loads nothing with FILEDIA=0 and leaves the
command at `Enter an option [?/Create/Load/Set]:` (LASTPROMPT), which
makes the whole seat answer RPC_E_CALL_REJECTED to every client until
ESC is pressed; with FILEDIA=1 it opens the modal "Select Linetype File"
dialog. `doc.Linetypes.Load("CENTER", "acadiso.lin")` returns None and
the table grows 3 -> 4; a repeat raises 'Duplicate record name', an
unknown name 'Undefined linetype', a missing file 'File system error'.
`_ensure_linetype_loaded` and `linetype_load` now call `Linetypes.Load`
(MEASUREMENT still read on the document to pick the .lin), touch no
FILEDIA, and report a failure with the English excepinfo description.

`apply_standard` reads every variable it will write before the first
style is created, so a read the engine refuses is a refusal with nothing
written (it used to fail after ISO-25 / ISOCP were created and current).

Fakes: every application fake refuses GetVariable/SetVariable
(tests/test_styles.py's COM fixture carried them on the Application,
enshrining the wrong shape); the members exist on document fakes only.
Regression tests per rerouted site: linetype load via Linetypes.Load with
MEASUREMENT on the document, drawing_info units from the document,
AUDITCTL set/restored on the document, CMDACTIVE/USERS1 on the document,
apply_standard refusing before any write.

Live end-to-end with the real ComBackend on a scratch document:
apply_standard('iso') -> INSUNITS 4, ISO-25 (already in acadiso.dwt,
created: false) and ISOCP (created: true) current, second call created:
false / changed: {}; linetype_load('CENTER') -> Linetypes 3 -> 4, FILEDIA
stays 1, repeat already_loaded, 'NOSUCHLT' refused by name;
_ensure_linetype_loaded('HIDDEN') -> 3 -> 4; drawing_info units 'mm';
drawing_audit AUDITCTL 0 -> 0; system_run_command ok;
system_run_lisp('(+ 40 2)') -> '42'.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 12:25:11 +03:00
Umut CANandClaude Opus 5 70afd57831 feat(server): settings pack — 22 environment tools behind TOOL_PACKS, lean grows to 55, three groups, golden set +10
Task 24 (merge sanity) on main after the five track E groups merged.

- TOOL_PACK_NAMES = ("core", "pid", "settings"); PACK_TOOL_NAMES["settings"]
  is exactly the 22 SECTION 20 tools. Styles and page setup stay in core.
- LEAN_TOOL_NAMES += page_setup_apply, batch_plot (53 -> 55).
- _GROUP_TAG_PRIORITY / _GROUP_TAG_LABELS: "style" moved up next to "pid",
  "pagesetup" -> page_setup and "environment" -> environment added; the 28
  SECTION 19/20 decorators gain their section tag, so _tool_groups() reports
  styles 10 / page_setup 6 / environment 22 (23 groups, 204 tools) and
  pack == group == section for the settings pack.
- SECTION headers, backends/base.py composition, contracts/__init__.py
  exports and the layer_states feature entry were already correct after the
  merge (read and confirmed, nothing edited).
- Pack text: config.py, .env.example, README config row; README <sub> line
  204 tools in 23 groups; release snapshot 3259 collected tests (measured).
- docs/tool-inventory.json regenerated; registry snapshot re-derived.
- tests: test_tool_packs.py replaced (11 tests), test_capability_contract.py
  +3 (composition, the agreed capability flags, layer_states honesty),
  golden set +10 tuning cases (81 = 66 tuning + 15 holdout); all ten route
  in the top 3 without alias edits.

Deviation from the plan text: TRACK_E_KEYS carries five keys, not six. The
plan's "mleaderstyle" (ezdxf True / com False) contradicts spec §8.1, which
retracted that key because the ActiveX route exists (§4.2); measured on the
tree: capability_keys() == {boundary_trace, chspace, interactive_prompt,
live_application, preferences, revcloud, wipeout}, and
ComBackend.mleaderstyle_create is a native implementation
(backends/com_backend.py:6752, is_capability_default -> False). The test now
also asserts the key is absent.

No new ActiveX call was written in this task, so no live probe was needed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 11:35:00 +03:00
Umut CANandClaude Opus 5 90c1194f7f merge: track-e group V
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 11:18:03 +03:00
Umut CANandClaude Opus 5 8e05b5e8eb merge: track-e group P
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 11:14:02 +03:00
Umut CANandClaude Opus 5 3278586c6e merge: track-e group C
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 11:12:15 +03:00
Umut CANandClaude Opus 5 0a581a8da3 merge: track-e group S
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 11:10:22 +03:00
Umut CANandClaude Opus 5 6b3477081c merge: track-e group H
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 11:10:17 +03:00
Umut CANandClaude Opus 5 d313da783a docs(analysis): Track A review backlog — every minor finding with a disposition
Waves 1-4 of the Track A review produced ~170 minor findings that lived
only in the orchestrator's scratchpad. Filed de-duplicated, one line each:
fixed-in-task-N (this track's hardening tasks), fixed-in-track-A (with the
commit), accepted-limitation (with the reason) or deferred-1.7.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 11:08:04 +03:00
Umut CANandClaude Opus 5 efcc8bbba1 fix(task-7): crossings test the exact arc, so a line through a jump's apex counts
flatten_bulges chops a semicircle into an even number of chords (36 for
r=50, 12 for r=5), so a flattened vertex lands exactly on the apex — the
axis of symmetry, the one place a P&ID line most plausibly meets a
crossing jump. segments_cross treats a vertex hit as a junction, so both
neighbouring chords dropped it and the arc contributed 0: the (45,0)->(55,0)
bulge -1 jump reported crossings 0 at x=50 and 1 at x=50.3 or x=49, the
plan's own (0,0)->(100,0) semicircle 0 at x=50, and the mirrored frame
(extrusion -Z) 0 at x=-50.

count_crossings now takes bulges= (per-chain DXF bulge lists, zero-padded)
and tests every bulged edge as its exact arc through the new
segment_arc_crossings — circle/segment intersection restricted to the
sweep — with the same junction rule as the straight case: a hit within
_EPS of the segment's ends, of the arc's own two ends, or a tangent, is
not a crossing. Nothing along the sweep is a vertex any more. The arc
parametrisation is factored into _arc_of_bulge and shared with
flatten_bulges, which keeps its promised signature and its ezdxf pin but
no longer feeds the crossing count. draw_line passes the vertices and
bulges through unflattened.

Pinned in tests: the apex case on the semicircle (x=50, y 20->60), the
r=5 jump at x=50 / 50.3 / 49 on +Z and -Z frames, the junction cases
(T-touch on the arc, through the arc's endpoint, chord side, tangent
along the apex, in-and-out at y=4.9 counts 2), and 4x400 seeded random
segment/arc pairs against ezdxf's ConstructionArc.intersect_line (a
20 000-case run in the worktree found 0 mismatches). The eight new
assertions fail on the flattened rule and pass on the exact one.

Headless finding, headless evidence; no new ActiveX call was written, so
the shared live AutoCAD was not touched.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 11:06:04 +03:00
Umut CANandClaude Opus 5 d3ef7b45a2 feat(discovery): style golden queries; dimstyle/textstyle set_current and drawing_apply_standard join the lean profile
Five tuning cases for the styles surface (DDIM, the ISO-25 set-current
paraphrase, the one-call drafting-standard paraphrase, the isocp text
style, and the dimstyle counting question) — measured against the live
catalog every one ranks top-1, so no alias vocabulary changed. The
docstring count moves to seventy-one (56 tuning + 15 holdout); the
holdout set is untouched.

Lean decision (spec §8.2): dimstyle_set_current, textstyle_set_current
and drawing_apply_standard join LEAN_TOOL_NAMES (50 -> 53); the seven
authoring/list tools stay full-only and all ten stay in core (no pack
claims them). Pinned by the new profile test in tests/test_styles.py,
written async like the rest of that module (its module-wide asyncio
mark warns on a sync test).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-22 10:51:21 +03:00
Umut CANandClaude Opus 5 9cb4bee587 fix(pid): existing line payloads are read tolerantly and crossings follow arcs, not chords
A foreign or hand-edited ACADMCP_PID payload (from: 'garbage', seq: True)
made the next pid_line_draw raise TypeError; payload_port_refs /
payload_seq now accept only well-formed values and a reader result never
raises. An existing polyline with a bulge was tested as its chord, so a
line through the arc reported crossings 0; flatten_bulges (pure, pinned
against ezdxf.math's flattening) feeds count_crossings on both engines.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-21 23:05:54 +03:00
Umut CANandClaude Opus 5 a5d166f365 feat(styles): drawing_apply_standard — ISO or ANSI styles, units and layers in one idempotent call
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-21 22:49:12 +03:00
Umut CANandClaude Opus 5 b458923e19 feat(templates): drawing_template_save on both engines — dwt_write is a declared capability
Live AutoCAD writes a real .dwt through SaveAs(path, ac2018_Template = 66) and
puts the description into the summary Comments; headlessly a .dxf template is
written through drawing_save_as and a .dwt request is refused with capability
dwt_write, naming the DXF route and the COM route. drawing_save_as's "dwt"
entry was 5 (acR13_dxf): a DWT request wrote an R13 DXF under a .dwt name.

Probed live on AutoCAD 2026 (typelib: ac2018_Template = 66, acR13_dxf = 5,
acTemplateDwg absent; the saved file starts AC1032, the document is rebound,
Comments takes). SECTION 19 is now 6 tools; SAVEAS joins SHARED_ACAD_COMMANDS;
templates/README.md documents the two files per template.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-21 22:48:31 +03:00
Umut CANandClaude Opus 5 cfb5d5082c fix(task-6): the reader no longer hands a signal line the neighbouring pipe's label
pid_graph step 5 ran the TEXT label fallback for every edge without a
number. Once signal lines stopped carrying a fabricated number (3c0babf),
every pneumatic/electric run drawn by pid_line_draw entered it, and a
transmitter-to-controller run 12 mm above a labelled header came back as
line_number="100-P-1", number_source="label" — on both engines, with no
confidence field on edges to flag it.

The fallback now skips an edge that carries its own record (an
ACADMCP_PID payload: its `number: null` is the answer) and any
signal-class edge, payload or layer-classified (`signal_unknown`
included): LINE_NUMBER_RE is the pipe grammar, so a match near a signal
line always belongs to a neighbouring pipe. A foreign process line still
takes its label; a verbatim number on a signal line still reads back
from XDATA.

Tests: the finding's layout in test_pid_graph (engine-drawn signal beside
a labelled pipe, verbatim signal number, foreign electric and
signal_unknown lines beside a labelled foreign pipe) and the line_list
row in test_pid_deliverables — three of the four fail on the old reader.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-21 22:44:35 +03:00
Umut CANandClaude Opus 5 021a4eb43d fix(task-11): dimensions_using_style is one filtered selection set, not a per-entity COM walk
_com_dimensions_using walked every entity of every layout and, since the
un-narrowing fix, re-dispatched each one through a dynamic proxy before
reading ObjectName (~8-10 ms per entity), which put dimstyle_modify past
the 60 s COM_CALL_TIMEOUT on a ~6k-entity drawing after its SetVariable +
CopyFrom had already landed. It is now a single
SelectionSet.Select(acSelectionSetAll, (0 . "DIMENSION") (3 . <style>)),
which answers from AutoCAD's own index whatever the drawing size.

Measured live (AutoCAD 2026, scratch doc, 1000 LINEs + 14 dimensions across
model and paper space): walk 12.7-15.8 s, selection 0.02-0.09 s, identical
handle sets; the whole dimstyle_modify tool now returns in 0.07 s.

The group-3 filter value is a wcmatch pattern, so the style name is
backtick-escaped (_wcmatch_literal): unescaped, "A.B" also selected the
dimensions of "A_B", "N#1" those of "N21", "P[1]" those of "P1", "S@X"
those of "SAX" (measured). Handles are returned in ascending handle order,
Select failures propagate, and the selection set is deleted either way.

tests/test_styles.py: the fake document carries a SelectionSets that
emulates ssget "X" over every layout with wcmatch-literal semantics and
narrowed IAcadEntity items, refusing an unescaped wildcard; three tests
cover no-per-entity-read, escaping, and cleanup-on-failure.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-21 22:39:08 +03:00
Umut CANandClaude Opus 5 17f7228fd6 fix(task-19): a .dxf template really reaches the live seat; the fallback dimvars land on Standard
Documents.Add(<file>) accepts only a genuine DWT. Measured on AutoCAD 2026:
Add(templates/iso_a3_pid.dxf) returned the default acadiso drawing (layers
['0'], Layout1/Layout2) exactly as Add() and Add(<missing.dwt>) did, so
drawing_new(template=<bundled name>) reported ok:true with source
'bundled_dxf' over a blank document, and the explicit .dxf path route was
just as blank. ComBackend.drawing_new now converts any non-.dwt template
through AutoCAD itself (Documents.Open read-only -> SaveAs ac2018_Template,
older constants tried next -> Close(False)), caches the .dwt in the temp
folder keyed on path/size/mtime, hands Add the .dwt, and refuses a missing
template file instead of letting Add default silently. The tool result
carries template.dwt / template.dwt_cached. Re-measured end to end through
server.drawing_new on the real ComBackend: ansi_b_mech -> 11 layers, tab B,
DIMTAD 0 / DIMTIH 1 / DIMEXO 1.5; iso_a3_pid -> 17 layers, tab A3, second
call reuses the cached .dwt (0.8 s conversion once). Fake-ActiveX tests pin
the call shape and that the conversion document never stays open.

Headlessly the build's fallback wrote spec 4.1 only as header DIM variables,
and the renderer folds six of them, so DIMTAD/TIH/TOH/EXE/EXO/GAP/LUNIT/LWD
were a no-op: ansi_b_mech dimensioned with ISO text placement while
system_get_variable and AutoCAD said ANSI. The fallback now also stores each
value on the Standard dimstyle; the five DXFs are rebuilt (--check passes)
and a test reads the effective values off a DIMENSION drawn from each
template and asserts header and style agree.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd
2026-09-21 22:31:44 +03:00