A short parallel session opened in ./freecad-port to work out how to resume the main effort after a sandbox hiccup.
I'll start by checking the directory structure and git status of the project, then spawn subagents to explore the working tree state and other relevant information.
{"command": "ls -la /home/magik6k/lcad-wasm/freecad-port/ && echo \"---\" && ls /home/magik6k/lcad-wasm/", "description": "List project directory contents"}total 224 drwxr-xr-x 1 agent agent 636 Jul 4 20:50 . drwxr-xr-x 1 agent agent 2290 Jul 5 13:22 .. -rw-r--r-- 1 agent agent 10238 Jul 3 18:00 00-OVERVIEW.md -rw-r--r-- 1 agent agent 164949 Jul 4 20:50 2026-07-04-205009_2396x2075_scrot.png drwxr-xr-x 1 agent agent 616 Jul 3 18:27 FreeCAD -rw-r--r-- 1 agent agent 13228 Jul 4 20:03 STATUS.md drwxr-xr-x 1 agent agent 578 Jul 5 13:33 deploy drwxr-xr-x 1 agent agent 908 Jul 4 19:58 deploy-gui drwxr-xr-x 1 agent agent 134 Jul 4 05:25 deploy-jspi drwxr-xr-x 1 agent agent 186 Jul 3 19:34 deploy-t1 drwxr-xr-x 1 agent agent 512 Jul 4 06:16 research -rw-r--r-- 1 agent agent 3026 Jul 3 18:05 stage-0-toolchain.md -rw-r--r-- 1 agent agent 2660 Jul 3 18:05 stage-1-headless-kernel.md -rw-r--r-- 1 agent agent 1760 Jul 3 18:05 stage-2-gui-link.md -rw-r--r-- 1 agent agent 2042 Jul 3 18:06 stage-3-gui-boot.md -rw-r--r-- 1 agent agent 2697 Jul 3 18:06 stage-4-webgl-coin-backend.md -rw-r--r-- 1 agent agent 2052 Jul 3 18:06 stage-5-files-persistence.md -rw-r--r-- 1 agent agent 2371 Jul 3 18:06 stage-6-mvp-productionize.md -rw-r--r-- 1 agent agent 2784 Jul 3 18:07 stage-7-python-workbenches.md drwxr-xr-x 1 agent agent 244 Jul 4 06:19 toolchain --- 00-OVERVIEW.md LibreCAD aqtinstall.log boot-test.mjs boot-test2.mjs bootshot.mjs boxrender.mjs boxrender2.mjs build-clean.log build-ctx.log build-vg.log build-vh.log build-vi.log build-vj.log build-vk.log build-vl.log build-vm.log build-vn.log build-vo.log build-vp.log build-vp2.log build-vp3.log build-vp4.log build-vp5.log build-vp6.log build-vp7.log build-vp8.log build-vp9.log build-vpa.log build-vpb.log build-vpc.log build-vpd.log build-vpe.log build-vpf.log canvassize.mjs check-deploy.sh consolecheck.mjs deploy deploy-debug deployburst.log deployburst.mjs deployhover.log deployhover.mjs deploytest.log deploytest.mjs dominspect.mjs emitcount.mjs fileio.mjs freecad-feasibility.md freecad-port guiprobe.mjs guiprobe2.mjs m0probe.mjs node_modules opencode openscad openscad-feasibility.md out pack-mods.sh package-lock.json package.json phase-0-toolchain.md phase-1-core-engine.md phase-2-configure-and-link.md phase-3-boot-gui.md phase …[truncated]
{"command": "ls -la /home/magik6k/lcad-wasm/freecad-port/.claude/ 2>/dev/null; echo \"---\"; ls -la /home/agent/.claude/projects/ 2>/dev/null; echo \"---\"; ls -la /home/magik6k/.claude/projects/ 2>/dev/null | head -30", "description": "Fin…--- total 28 drwx------ 5 agent agent 4096 Jul 5 15:18 -home-magik6k-lcad-wasm drwx------ 3 agent agent 4096 Jul 5 15:21 -home-magik6k-lcad-wasm-freecad-port drwx------ 3 agent agent 4096 Jul 5 11:00 -home-magik6k-lcad-wasm-freecad-port-FreeCAD drwx------ 3 agent agent 4096 Jul 5 14:46 -home-magik6k-lcad-wasm-pyside-port drwx------ 6 agent agent 4096 Jul 5 15:19 . drwxr-xr-x 1 agent agent 4096 Jul 5 15:21 .. ---
{"command": "for d in /home/agent/.claude/projects/*/; do echo \"== $d\"; ls -la \"$d\" | head -20; done", "description": "List session files in each project dir"}== /home/agent/.claude/projects/-home-magik6k-lcad-wasm-freecad-port-FreeCAD/ total 12 drwx------ 3 agent agent 4096 Jul 5 11:00 . drwx------ 6 agent agent 4096 Jul 5 15:19 .. drwx------ 3 agent agent 4096 Jul 5 11:00 17f09f89-ce7c-4f49-aa6a-cf0521026805 == /home/agent/.claude/projects/-home-magik6k-lcad-wasm-freecad-port/ total 48 drwx------ 3 agent agent 4096 Jul 5 15:21 . drwx------ 6 agent agent 4096 Jul 5 15:19 .. -rw------- 1 agent agent 34612 Jul 5 15:21 832fa851-b88e-4605-884a-ab3517ceb9f6.jsonl drwxr-xr-x 2 agent agent 4096 Jul 5 15:21 memory == /home/agent/.claude/projects/-home-magik6k-lcad-wasm-pyside-port/ total 12 drwx------ 3 agent agent 4096 Jul 5 14:46 . drwx------ 6 agent agent 4096 Jul 5 15:19 .. drwx------ 3 agent agent 4096 Jul 5 14:46 17f09f89-ce7c-4f49-aa6a-cf0521026805 == /home/agent/.claude/projects/-home-magik6k-lcad-wasm/ total 54916 drwx------ 5 agent agent 4096 Jul 5 15:18 . drwx------ 6 agent agent 4096 Jul 5 15:19 .. -rw------- 1 agent agent 2366 Jul 5 15:10 0eb7adbb-fe30-4e17-bfd6-8186a9818389.jsonl drwxr-xr-x 5 agent agent 4096 Jul 5 11:26 17f09f89-ce7c-4f49-aa6a-cf0521026805 -rw------- 1 agent agent 11878036 Jul 5 15:05 17f09f89-ce7c-4f49-aa6a-cf0521026805.jsonl drwxr-xr-x 5 agent agent 4096 Jul 4 12:30 18e25685-98b5-4959-935f-943b1af20789 -rw------- 1 agent agent 34371230 Jul 5 15:18 18e25685-98b5-4959-935f-943b1af20789.jsonl -rw------- 1 agent agent 6421 Jul 5 15:11 9c58fa90-9f70-4e86-91be-756f2ccd9d44.jsonl -rw------- 1 agent agent 9923484 Jul 5 15:16 b70028ac-3ec1-4bca-a264-591cb7bb1a36.jsonl -rw------- 1 agent agent 2102 Jul 5 15:18 fbea5920-4fbc-46de-91d9-8f206fb2d3fa.jsonl drwxr-xr-x 2 agent agent 4096 Jul 5 13:43 memory
I'm looking at the session files in the home directory — there are three large transcripts with significant sizes, but the timestamps might not be reliable. I need to determine which session represents the most recent progress by examining the internal timestamps within each jsonl file and reviewing what was happening at the end of each one. I'll have a subagent analyze these session files to get a clearer picture. For the broader project state, I should check the STATUS.md and 00-OVERVIEW.md files, review the deploy and research directories, check the FreeCAD repository state, and look at build logs to understand what's completed and what's in progress. The smaller sessions are likely failed attempts to resume. I can parallelize most of this work, but I'll read STATUS.md myself since it's the authoritative source and will be quick to review.
I found the session transcripts in `/home/agent/.claude/projects/-home-magik6k-lcad-wasm/` — three large ones plus some failed resume attempts. I'll fan out subagents to reconstruct the timeline from the transcripts and review the project state, while I read STATUS.md directly.
{"file_path": "/home/magik6k/lcad-wasm/freecad-port/STATUS.md"}1 # FreeCAD wasm port — execution status 2 3 Updated: 2026-07-04 (session 2) 4 5 ## Headline 6 **FreeCAD's full Qt GUI runs in a browser AND Python now drives the OCCT kernel 7 from the live module** — the two were previously mutually exclusive. The GUI 8 renders (menus, Start workbench "Welcome" with theme thumbnails, Report View, 9 modal dialogs) and `Part.makeBox(10,10,10).Volume → 1000` runs with no trampoline 10 crash. Screenshot: `deploy-gui/boot-async.png`. The 3D viewport still needs the 11 Coin WebGL backend (Stage 4). Plus the shippable headless kernel (T1). 12 13 ## ◑ Session 2b — 3D viewport: OPENS + paints; geometry not yet drawn 14 Full adversarial review done (35 verified findings; the "13k-line" fork diff is 15 CRLF→LF churn — real change is ~1110 insertions). Viewport advanced from 16 non-functional to **the 3D view opening**: a document tab, view area, and live 17 status-bar view dimensions now appear (`deploy-gui/vp2.png`), Python drives 18 OCCT with no hang, and `QuarterWidget::actualRedraw` fires with a valid WebGL2 19 context. Fixes landed this pass: 20 - **GLES3 surface format** (Gui/Application.cpp, Quarter/QuarterWidget.cpp): the 21 code requested a *desktop* OpenGL context, impossible on wasm → Coin's 22 `cc_glglue_instance` failed. Now requests OpenGLES 3.0. This is what makes the 23 3D view actually open instead of hanging/blacking the GUI. 24 - **Coin getprocaddress inverted** (coin/src/glue/gl.cpp) to resolve through our 25 emulator first, + `glDrawArrays`/`glDrawElements` added to `fcWasmResolveGL` 26 (Gui/WasmGLFixedFunc.cpp) — routes Coin's draws into the emulator and stops 27 `ff_setup_and_draw` from being dead-code-eliminated. 28 - **GL_QUADS/QUAD_STRIP/POLYGON emulation** (WasmGLFixedFunc.cpp) — WebGL2 rejects 29 modes 7/8/9; expand/remap to triangles. 30 - **Progress-sequencer suspend fix** (Gui/ProgressBar.cpp): `qApp->processEvents()` 31 suspends under asyncify; guarded off on wasm → recompute/boolean no longer 32 deadlock when driven outside the main event loop. 33 - **Trampoline bake** (Main/CMakeLists.txt POST_BUILD) — the getPyEMTrampolinePtr→0 34 fix now survives a clean relink (was a manual han …[truncated]
{"description": "Forensic analysis of session transcripts", "subagent_type": "general-purpose", "prompt": "You are doing forensic analysis of Claude Code session transcript files (JSONL) to figure out which session is the true \"latest, mos…Async agent launched successfully. (This tool result is internal metadata — never quote or paste any part of it, including the agentId below, into a user-facing reply.) agentId: a80bccc3259aff03a (internal ID - do not mention to user. Use SendMessage with to: 'a80bccc3259aff03a', summary: '<5-10 word recap>' to continue this agent.) The agent is working in the background. You will be notified automatically when it completes. Do not duplicate this agent's work — avoid working with the same files or topics it is using. output_file: /tmp/claude-1000/-home-magik6k-lcad-wasm-freecad-port/832fa851-b88e-4605-884a-ab3517ceb9f6/tasks/a80bccc3259aff03a.output Do NOT Read or tail this file via the shell tool — it is the full subagent JSONL transcript and reading it will overflow your context. If the user asks for progress, say the agent is still running; you'll get a completion notification.
{"description": "Review project working-tree state", "subagent_type": "Explore", "prompt": "Review the state of a FreeCAD-to-WebAssembly porting project. Search breadth: thorough. The working root is /home/magik6k/lcad-wasm/ with the main e…Async agent launched successfully. (This tool result is internal metadata — never quote or paste any part of it, including the agentId below, into a user-facing reply.) agentId: a6ce78baaa78b9b74 (internal ID - do not mention to user. Use SendMessage with to: 'a6ce78baaa78b9b74', summary: '<5-10 word recap>' to continue this agent.) The agent is working in the background. You will be notified automatically when it completes. Do not duplicate this agent's work — avoid working with the same files or topics it is using. output_file: /tmp/claude-1000/-home-magik6k-lcad-wasm-freecad-port/832fa851-b88e-4605-884a-ab3517ceb9f6/tasks/a6ce78baaa78b9b74.output Do NOT Read or tail this file via the shell tool — it is the full subagent JSONL transcript and reading it will overflow your context. If the user asks for progress, say the agent is still running; you'll get a completion notification.
I'm checking the STATUS.md file to understand what's happening, and I see two subagents are already working in the background. While they're running, I should review the memory directories for this project and the lcad-wasm project, though the transcript agent will handle the lcad-wasm side. Let me look at my own memory directory and MEMORY.md file, and maybe peek at the deploy directory—though the Explore agent is already covering that, so I'll avoid duplicating effort.
I found that STATUS.md shows this FreeCAD→WASM port is quite advanced with a working Qt GUI, Python integration, and 3D rendering—though there's a known Coin rendering bug. Two subagents are investigating the transcripts and disk state while I check my memory directory for prior context.
{"command": "ls -la /home/agent/.claude/projects/-home-magik6k-lcad-wasm-freecad-port/memory/ /home/agent/.claude/projects/-home-magik6k-lcad-wasm/memory/ 2>/dev/null", "description": "List memory directories for both project paths"}/home/agent/.claude/projects/-home-magik6k-lcad-wasm-freecad-port/memory/: total 8 drwxr-xr-x 2 agent agent 4096 Jul 5 15:21 . drwx------ 4 agent agent 4096 Jul 5 15:22 .. /home/agent/.claude/projects/-home-magik6k-lcad-wasm/memory/: total 44 drwxr-xr-x 2 agent agent 4096 Jul 5 13:43 . drwx------ 5 agent agent 4096 Jul 5 15:18 .. -rw-r--r-- 1 agent agent 678 Jul 5 13:43 MEMORY.md -rw-r--r-- 1 agent agent 18435 Jul 5 11:56 freecad-wasm-viewport.md -rw-r--r-- 1 agent agent 5186 Jul 5 13:43 pyside-wasm-port.md -rw-r--r-- 1 agent agent 1867 Jul 4 16:40 wasm-toolchain-eh-encodings.md
{"file_path": "/home/agent/.claude/projects/-home-magik6k-lcad-wasm/memory/MEMORY.md"}1 # Memory index 2 3 - [wasm toolchain & EH encodings](wasm-toolchain-eh-encodings.md) — /opt/toolchains layout shared by the CAD wasm ports; legacy-vs-exnref wasm-EH mixing breaks V8 loads and how to fix it 4 - [FreeCAD wasm viewport](freecad-wasm-viewport.md) — how the FreeCAD-wasm 3D viewport was made to render (offscreen FBO + QPainter blit) + asyncify-safe 3D view creation; also the module-enablement pipeline (PartDesign/Sketcher/Measure/Spreadsheet/Surface/Import) + file I/O 5 - [PySide wasm port](pyside-wasm-port.md) — porting PySide6/shiboken6 to the FreeCAD-wasm toolchain (static/no-dlopen/asyncify/CPython3.14); env + verified recipe; M0 (shiboken runtime) PROVEN 6
{"file_path": "/home/agent/.claude/projects/-home-magik6k-lcad-wasm/memory/freecad-wasm-viewport.md"}1 ---
2 name: freecad-wasm-viewport
3 description: How the FreeCAD-wasm 3D viewport was made to render (offscreen FBO + QPainter blit) and the asyncify-safe way to create a 3D view
4 metadata:
5 node_type: memory
6 type: project
7 originSessionId: 18e25685-98b5-4959-935f-943b1af20789
8 ---
9
10 FreeCAD WebAssembly port (/home/magik6k/lcad-wasm/freecad-port/FreeCAD, build dir /opt/toolchains/src/freecad-gui-build). The 3D viewport now RENDERS (gradient background, navigation cube, RGB axis cross all composite correctly) as of 2026-07-04.
11
12 **Root cause of the earlier black viewport:** On Qt-for-WebAssembly a child `QOpenGLWidget` gets its own isolated offscreen WebGL context whose FBO the window compositor cannot sample (no cross-context GL sharing), so 3D stayed black. Same problem OpenSCAD's wasm port solved.
13
14 **The fix (mirrors OpenSCAD's WasmGLWidget):**
15 - `src/Gui/WasmGLWidget.{h,cpp}` — `Gui::WasmGLWidget : public QWidget` (raster, NOT QOpenGLWidget), owns a `QOffscreenSurface` + `QOpenGLContext` (GLES3) + `QOpenGLFramebufferObject`. Exposes the QOpenGLWidget API subset Quarter uses: makeCurrent (binds FBO), doneCurrent (NO-OP — QWasmOpenGLContext::isValid() reports false when not current), isValid, context, format, grabFramebuffer/readbackImage (fbo_->toImage()). No Q_OBJECT (avoids moc on an `#ifdef __EMSCRIPTEN__` header).
16 - `Quarter/QuarterWidget.cpp`: `CustomGLWidget` derives from `Gui::WasmGLWidget` on wasm via `#ifdef` (else QOpenGLWidget). `paintEvent` after `actualRedraw()`: `QPainter p(viewport()); p.drawImage(viewport()->rect(), readbackImage())` then `inherited::paintEvent` for overlay items. The `static_cast<QOpenGLWidget*>(viewport())` became `CustomGLWidget*`.
17 - `Quarter/QuarterWidgetP.{h,cpp}`: cache-context `widgetlist` retyped `SbList<const QWidget*>` (common base); `GLViewportWidget` alias = WasmGLWidget on wasm / QOpenGLWidget else, cast where GL methods called. External `sharewidget` API stays `QOpenGLWidget*` (always null on wasm — qobject_cast returns null since WasmGLWidget has no Q_OBJECT).
18 - `Gui/CMakeLists.txt`: WasmGLWidget.cpp added to the EMSCRIPTEN target_sources.
19
20 **Creating a 3D view with …[truncated]The memory file reveals significant progress beyond what's documented in STATUS.md—the viewport bug is resolved, the sketcher and file I/O are functional, and several modules (PartDesign, Spreadsheet, Surface, Import, Measure) were enabled on July 5th. There's also a promising PySide WebAssembly port proof-of-concept, and the most recent work focused on module enablement and advancing that port.
The memory file shows significant progress beyond the STATUS.md — the solid disappears bug is fixed, Sketcher works, file operations work, and recent updates added several modules. I'll check the other memory files next.
{"file_path": "/home/agent/.claude/projects/-home-magik6k-lcad-wasm/memory/pyside-wasm-port.md"}1 --- 2 name: pyside-wasm-port 3 description: "How PySide6/shiboken6 is being ported to the FreeCAD-wasm toolchain (static, no-dlopen, asyncify, CPython 3.14) — env, verified recipe, M0 proven" 4 metadata: 5 node_type: memory 6 type: project 7 originSessionId: 17f09f89-ce7c-4f49-aa6a-cf0521026805 8 --- 9 10 Porting PySide6+shiboken6 to the FreeCAD WebAssembly build so Python/PySide workbenches + macros work in the browser. This is the keystone dep the [[freecad-wasm-viewport]] parity work is gated on. The adversarial audit called it "multi-month, research-grade, ~not-viable" — **that was wrong; M0 (shiboken runtime fully working in wasm) PASSES as of 2026-07-05.** 11 12 **ENVIRONMENT (all present):** PySide+shiboken 6.11 source `/tmp/pyside-setup` (git branch `6.11`; generator = `sources/shiboken6_generator`, runtime = `sources/shiboken6`, bindings = `sources/pyside6`). Host: clang/llvm 21 (`/usr/lib/llvm-21`, libclang.so via apt `libclang-cpp21-dev clang-21 python3.14-dev libxslt1-dev`), host CPython 3.14.4, host Qt `/opt/toolchains/qt/6.11.1/gcc_64`. Target: emscripten 4.0.12, Qt `/opt/toolchains/qt-asyncify/6.11.1/wasm_singlethread` (QT_FEATURE_thread=-1), wasm CPython 3.14 `/opt/toolchains/python-wasm`. Working dir `/home/magik6k/lcad-wasm/pyside-port/` (build scripts m0-build.sh, shiboken-mod-build.sh; plans in <slug>/plan.md; BUILD-PLAN.md is the master). Scoping-swarm findings (verified-by-test): Py3.14 compatible NO patches; QtCore typesystem already `-no-feature-thread`-guarded (only QBasicReadWriteLock/QReadWriteLock need a guard); minimal FreeCAD scope = shiboken6 + QtCore+QtGui+QtWidgets (QtGui+QtWidgets inseparable via Ext/PySide shim); QtUiTools NOT needed (native UiLoader). 13 14 **VERIFIED RECIPE (M0 = shiboken runtime + Shiboken module + signature, no Qt yet):** 15 1. Host generator: `cmake -S sources/shiboken6_generator -B <build> -DCMAKE_PREFIX_PATH="/opt/toolchains/qt/6.11.1/gcc_64;/usr/lib/llvm-21" -DPython_EXECUTABLE=/usr/bin/python3 -DBUILD_TESTS=OFF` (LLVM_INSTALL_DIR=/usr/lib/llvm-21) → `/opt/toolchains/pyside-host/bin/shiboken6` (v6.11.0). Reused unchanged for wasm — only its OUTPUT is cross-compiled. 16 2. Generated headers l …[truncated]
{"file_path": "/home/agent/.claude/projects/-home-magik6k-lcad-wasm/memory/wasm-toolchain-eh-encodings.md"}1 ---
2 name: wasm-toolchain-eh-encodings
3 description: Shared /opt/toolchains layout for the CAD wasm ports and the wasm-EH encoding pitfalls (legacy try vs try_table) that break linking against qt-jspi
4 metadata:
5 node_type: memory
6 type: project
7 originSessionId: b70028ac-3ec1-4bca-a264-591cb7bb1a36
8 ---
9
10 The CAD-to-wasm ports (LibreCAD shipped, FreeCAD ongoing, OpenSCAD shipped 2026-07-04) share `/opt/toolchains`: emsdk 4.0.12, `qt-jspi/6.11.1/wasm_singlethread` (static Qt, JSPI + `-fwasm-exceptions`, no threads), `qt-asyncify` (JS-EH fallback), `qtsrc` (patchable Qt sources + live `qtbase-build` ninja tree), `boost-wasm` (FreeCAD's), and OpenSCAD's deps in `oscad-deps` (+ build scripts/tarballs in `oscad-src`).
11
12 **Why:** wasm-EH has two instruction encodings — legacy `try`/`catch` and new `try_table`/exnref — and V8 rejects any module mixing them ("module uses a mix of legacy and new exception handling instructions"). qt-jspi 6.11.1 is new-EH; emcc 4.0.12 with plain `-fwasm-exceptions` emits **legacy**.
13
14 **How to apply:** compile C++ deps with `-fwasm-exceptions -sWASM_LEGACY_EXCEPTIONS=0`; setjmp-using C code (freetype, Qt bundled libpng/libjpeg) emits legacy sjlj regardless unless given `-mllvm -wasm-use-legacy-eh=false`; a post-link `wasm-opt --emit-exnref --all-features` cleans up whatever remains (wire it as POST_BUILD — emcc doesn't reliably run it itself). Other qt-jspi 6.11 wasm-GUI lessons live in `lcad-wasm/openscad-feasibility.md` "Outcome" section: QOpenGLWidget/RHI composition can't work (per-surface contexts, no sharing → render offscreen + raster blit), no-thread QMutex try_lock is a no-op (reentrancy guards silently fail), plain `app.exec()` works under JSPI (no LibreCAD-era postprocessing), and `_qt_internal_finalize_wasm_app()` must be called manually for non-qt_add_executable targets. [[freecad-wasm-port]]
15 I'm piecing together the session history from the memory logs. The latest session that crashed was probably 18e25685 at 34MB from July 5 at 3:18 PM, and I'm trying to figure out what it was doing when it failed — the module enablement pipeline was dated July 5, and PySide M0 passed in an earlier session on the same day. There's also a toolchain memory from July 4 that one of the other sessions wrote. The smaller sessions look like they might be failed resume attempts, and the deploy directory seems to have been touched recently but the thought cuts off there. The transcript agent should clarify what happened in that final session. I'll wait for both subagents to finish their work in the background. In the meantime, I could read the ROADMAP.md file directly since the memory references it — that would give me a quick sense of the project's current goals and plans without waiting, and it overlaps a bit with what the Explore agent is already checking.
I'm reviewing the roadmap from previous sessions while the subagents process the transcripts to understand the FreeCAD WebAssembly porting progress.
{"command": "ls /home/magik6k/lcad-wasm/porting/ && echo === && head -80 /home/magik6k/lcad-wasm/porting/ROADMAP.md 2>/dev/null", "description": "List porting dir and read ROADMAP.md head"}GAPS.md ROADMAP.md draft fem import-io measure mesh missing-cmds-sketcher modal-audit partdesign pyside-integrate pyside-recipe pyside-verify small-python-mods spreadsheet-surface techdraw threading-audit webengine-stub === # FreeCAD → WebAssembly — Master Porting Roadmap Tree: `/home/magik6k/lcad-wasm/freecad-port/FreeCAD` (branch `wasm-port`) Build dir (configured, out-of-source, Ninja + emscripten): `/opt/toolchains/src/freecad-gui-build` Toolchain: emscripten 4.0.12, ASYNCIFY + JS-EH (`-fexceptions`), **single-threaded (no pthreads)**, static CPython 3.14.4, static Qt 6.11.1 (`wasm_singlethread`, `-no-feature-thread`), static OCCT, static Coin3D. No dlopen — Python C-extensions registered via `PyImport_AppendInittab` in generated `WasmInittab*.cpp`. Enabled today: `BUILD_GUI/PART/SKETCHER/MATERIAL/START` (+ kernel). Everything else OFF. This roadmap consolidates 16 per-item analyses. It is ordered by **dependency + parity-per-effort**, grouped into waves, and gives a concrete PR sequence with build steps and a global threading/modal hazard checklist that gates every module. --- ## 0. Executive verdict (read first) - **Do NOT do PySide first.** The optimistic "PySide first, 1–2 weeks" framing is **refuted** by the adversarial verification (`pyside-verify`): with the toolchain *as configured today* it is a multi-month, research-grade dependency port bordering on not-viable (see §5 contradiction log). PySide unblocks the *most* parity in the abstract, but its cost/risk is an order of magnitude above everything else, and nothing else depends on completing it to make progress. - **Highest-value cheap wins come from the C++ workbenches** that were pre-wired for wasm: **PartDesign, Measure, Spreadsheet, Surface, Import, Mesh** — none need PySide, none add threads that aren't already handled, and each is hours-to-days. - **Two foundational needs-code items gate everything and must land first:** the 2 live threading fixes (`threading-audit`) and the file-dialog browser bridge + hang guards (`modal-audit`). Without them the app has latent startup hangs and no working File▸Open/Save. **Single highest-value next action:** land the foundational **th …[truncated]
The roadmap is outdated—it lists PART/SKETCHER/MATERIAL/START as enabled today, but the actual work from July 5 shows PartDesign/Measure/Spreadsheet/Surface/Import were the ones that got enabled. There's also a contradiction with the PySide decision: the roadmap said not to do it, but the M0 pass on July 5 proved that audit wrong, and there was actually a PySide port session running that same day up until mid-afternoon. I'm waiting for the two agents to complete their work. Since there's no explicit wait tool and the system will re-invoke me automatically on notification, I'll just output a brief status and let the task-notification bring me back in.
I've pieced together the roadmap and memory files into a coherent story—the last step is analyzing the transcript to identify where each session failed. Both subagents are still working, so I'll give you the full picture once they finish, but I've already found that STATUS.md is outdated (the viewport bug was fixed, and the GUI now supports Part modeling, Sketcher, and file I/O), and the Jul 5 sessions added five workbenches and made significant progress on a PySide6 port that was previously thought unviable.
{"command": "sleep 30; echo waiting", "description": "Wait for subagents", "run_in_background": true}Command running in background with ID: barzef3xp. Output is being written to: /tmp/claude-1000/-home-magik6k-lcad-wasm-freecad-port/832fa851-b88e-4605-884a-ab3517ceb9f6/tasks/barzef3xp.output. You will be notified when it completes. To check interim output, use Read on that file path.
{"query": "select:Monitor", "max_results": 1}I don't need to spawn a Monitor process since the agent will automatically re-invoke me when notifications arrive. I'll skip the background sleep hack and just end this turn, letting the agent's built-in notification system resume me when there's progress to report.
The sleep operation is wrapping up while the agents continue their work, so I'm waiting for their notifications to come through.
One agent has finished processing, and I'm waiting for the transcript-forensics agent to complete before I can put together the final report.
I'm noticing a timing discrepancy between what the two agents found — the transcript agent shows the last activity for 17f09f89 at 13:05 on July 5, but the disk agent discovered PySide build logs and shiboken binding-generator activity at 15:05 the same day, with file modification times also reflecting 15:05. The transcript data ends at 13:05:56, so there's a two-hour gap where file activity continued after the recorded session ended. This could mean background processes kept running after the session's last message (which was waiting for a notification), or the session actually continued past 13:05 but the transcript agent's read missed later entries. The deploy/FreeCAD.wasm file at 14:39 and related files at 14:36 suggest activity well after 13:05, though the user mentioned file timestamps might be unreliable since files got touched. The memory files show 13:43 timestamps, and the other session (18e25685) has a 15:18 mtime, so I need to rely on the internal timestamps from the transcript rather than disk mtimes to determine what actually happened.
{"command": "cd /home/agent/.claude/projects/-home-magik6k-lcad-wasm && for f in 17f09f89-ce7c-4f49-aa6a-cf0521026805.jsonl 18e25685-98b5-4959-935f-943b1af20789.jsonl; do echo \"== $f\"; tail -c 100000 \"$f\" | grep -o '\"timestamp\":\"[^\"…== 17f09f89-ce7c-4f49-aa6a-cf0521026805.jsonl "timestamp":"2026-07-05T13:05:54.816Z" "timestamp":"2026-07-05T13:05:54.817Z" "timestamp":"2026-07-05T13:05:56.490Z" == 18e25685-98b5-4959-935f-943b1af20789.jsonl "timestamp":"2026-07-05T13:17:43.301Z" "timestamp":"2026-07-05T13:18:17.685Z" "timestamp":"2026-07-05T13:18:17.685Z" Shell cwd was reset to /home/magik6k/lcad-wasm/freecad-port
{"command": "ls -la /home/agent/.claude/projects/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/subagents/ 2>/dev/null | tail -10; echo ===; find /home/agent/.claude/projects/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0…total 12 drwxr-xr-x 3 agent agent 4096 Jul 5 11:00 . drwxr-xr-x 5 agent agent 4096 Jul 5 11:26 .. drwxr-xr-x 5 agent agent 4096 Jul 5 14:46 workflows === /home/agent/.claude/projects/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/subagents/workflows/wf_f28ac27b-38f/agent-a0451e3d70262f639.jsonl /home/agent/.claude/projects/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/subagents/workflows/wf_f28ac27b-38f/agent-aa87263a58d5897dd.jsonl /home/agent/.claude/projects/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/subagents/workflows/wf_f28ac27b-38f/agent-ab094a64fe639d2ae.jsonl /home/agent/.claude/projects/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/subagents/workflows/wf_f28ac27b-38f/journal.jsonl
I'm seeing that a workflow continued running after the main session ended at 13:05, with subagents handling the deploy rebuild, data processing, and binding generation until around 15:05—that's why there's activity in the workflows directory timestamped at 14:46 even though the primary transcript stopped earlier. Now I need to dig into the journal and the workflow directory timestamps to understand what the workflow was actually doing and how much progress it made.
The main transcript ends at 13:05, but a workflow launched in session 17f09f89 continued running until ~15:05 and rebuilt the deploy and generated the M2 QtCore bindings. I'll now investigate what that workflow was doing and how far it progressed.
{"command": "D=/home/agent/.claude/projects/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/subagents/workflows; ls -la $D/; for w in $D/wf_*; do echo \"== $w\"; ls -la \"$w\" | head -20; done", "description": "List workflow di…total 20 drwxr-xr-x 5 agent agent 4096 Jul 5 14:46 . drwxr-xr-x 3 agent agent 4096 Jul 5 11:00 .. drwxr-xr-x 2 agent agent 4096 Jul 5 11:21 wf_4e894f41-2ca drwxr-xr-x 2 agent agent 4096 Jul 5 12:51 wf_6c234df9-720 drwxr-xr-x 2 agent agent 4096 Jul 5 14:46 wf_f28ac27b-38f == /home/agent/.claude/projects/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/subagents/workflows/wf_4e894f41-2ca total 5296 drwxr-xr-x 2 agent agent 4096 Jul 5 11:21 . drwxr-xr-x 5 agent agent 4096 Jul 5 14:46 .. -rw------- 1 agent agent 222950 Jul 5 11:06 agent-a007f0690f1af37e8.jsonl -rw-r--r-- 1 agent agent 48 Jul 5 11:00 agent-a007f0690f1af37e8.meta.json -rw------- 1 agent agent 168591 Jul 5 11:05 agent-a064ebc563d5089af.jsonl -rw-r--r-- 1 agent agent 48 Jul 5 11:00 agent-a064ebc563d5089af.meta.json -rw------- 1 agent agent 225410 Jul 5 11:06 agent-a17981b6cecb5ed09.jsonl -rw-r--r-- 1 agent agent 48 Jul 5 11:00 agent-a17981b6cecb5ed09.meta.json -rw------- 1 agent agent 278921 Jul 5 11:08 agent-a196a537b5cdd473e.jsonl -rw-r--r-- 1 agent agent 48 Jul 5 11:00 agent-a196a537b5cdd473e.meta.json -rw------- 1 agent agent 408036 Jul 5 11:13 agent-a1acd4326627be9a0.jsonl -rw-r--r-- 1 agent agent 48 Jul 5 11:00 agent-a1acd4326627be9a0.meta.json -rw------- 1 agent agent 371820 Jul 5 11:11 agent-a3b15ee6acb6c404c.jsonl -rw-r--r-- 1 agent agent 48 Jul 5 11:00 agent-a3b15ee6acb6c404c.meta.json -rw------- 1 agent agent 274964 Jul 5 11:07 agent-a3ec59920f2a11bb2.jsonl -rw-r--r-- 1 agent agent 48 Jul 5 11:00 agent-a3ec59920f2a11bb2.meta.json -rw------- 1 agent agent 215832 Jul 5 11:06 agent-a42fd99ed785592d9.jsonl -rw-r--r-- 1 agent agent 48 Jul 5 11:00 agent-a42fd99ed785592d9.meta.json -rw------- 1 agent agent 209196 Jul 5 11:06 agent-a5d54ff1ef67fdfb8.jsonl == /home/agent/.claude/projects/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/subagents/workflows/wf_6c234df9-720 total 2656 drwxr-xr-x 2 agent agent 4096 Jul 5 12:51 . drwxr-xr-x 5 agent agent 4096 Jul 5 14:46 .. -rw------- 1 agent agent 497117 Jul 5 12:51 agent-a206ff79ac7d6d60a.jsonl -rw-r--r-- 1 agent agent 48 Jul 5 12:36 agent-a206ff79ac7d6d60a.me …[truncated]
I'm noticing a timing discrepancy — the workflow started at 14:46, which is well after the transcript's final message at 13:05:56, suggesting either the session remained active longer than the jsonl file indicates or this workflow originated from a different transcript entirely. The files are stored under session 17f09f89's directory, which means that session should have still been running past 13:05, yet the jsonl log cuts off right at that timestamp — something doesn't quite add up. The user warned that file modification times might be unreliable since they were touched, so I should trust the internal timestamps instead. Let me examine the actual timestamps embedded in the workflow's journal and agent transcripts to figure out what's really happening here.
The workflow files are newer than the transcript's last entry, but that could be from file touching. I'll check the internal timestamps and content of that workflow to verify.
{"command": "D=/home/agent/.claude/projects/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/subagents/workflows/wf_f28ac27b-38f; cat $D/journal.jsonl; echo ===; for f in $D/agent-*.jsonl; do echo \"-- $f\"; head -c 4000 \"$f\" …{"type":"started","key":"v2:e3629aac10697f644dd7ede54d6bd31ea6ae45d2049dfc4cf034678fde3b7fc1","agentId":"aa87263a58d5897dd"}
{"type":"started","key":"v2:d323c4c79d67ffb6ce53212447a73a4c12979e37c7ab0ab9a3ea9a72825c152a","agentId":"ab094a64fe639d2ae"}
{"type":"started","key":"v2:5db10e90e865b146ee3115da632be1d4987caf82b2dd813d68f2e68c2921c86a","agentId":"a0451e3d70262f639"}
===
-- /home/agent/.claude/projects/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/subagents/workflows/wf_f28ac27b-38f/agent-a0451e3d70262f639.jsonl
"timestamp":"2026-07-05T12:50:35.357Z"
"timestamp":"2026-07-05T12:50:36.058Z"
-- /home/agent/.claude/projects/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/subagents/workflows/wf_f28ac27b-38f/agent-aa87263a58d5897dd.jsonl
"timestamp":"2026-07-05T12:50:38.844Z"
"timestamp":"2026-07-05T12:50:44.384Z"
-- /home/agent/.claude/projects/-home-magik6k-lcad-wasm/17f09f89-ce7c-4f49-aa6a-cf0521026805/subagents/workflows/wf_f28ac27b-38f/agent-ab094a64fe639d2ae.jsonl
"timestamp":"2026-07-05T12:50:32.312Z"
"timestamp":"2026-07-05T12:50:32.747Z"Looking at the tail end of those agent log files, the timestamps show activity around 12:50, but the file modification times are stamped 14:46-14:50 — about two hours later. This suggests the files were touched after they were actually written, probably by some background process like a copy, sync, or backup operation, making the mtimes unreliable for determining when the agents actually ran. Ah, I see it now — the internal timestamps are in UTC (marked with Z), while the file mtimes are in local time. 12:50 UTC converts to 14:50 in UTC+2 (like CEST). Checking the math: one file shows 13:05:56Z internally with an mtime of 15:05 local, which is exactly a +2 hour offset. The deploy/FreeCAD.wasm file has an mtime of 14:39 local, which is 12:39 UTC — before the session ended at 13:05:56 UTC. The m2-qtcore log at 15:05 local equals 13:05 UTC, which is precisely when the session crashed during the M2-QtCore build. Everything lines up perfectly now. So there's no activity after 13:05:56 UTC (15:05 local) when the session died. The m2-qtcore build log at 15:05 local marks the moment of failure, not post-death activity. The deploy rebuild at 14:39 local was completed before the crash. The timeline is tight — the session died only minutes before I was started at 15:21 local. Now I have the full picture and can write the final report. I should also create a memory pointer file in my directory linking to where the actual state lives, since the real memory for this project is under the …
I've figured out the timestamp discrepancy — the file mtimes are in local time (UTC+2) while the transcript uses UTC, so there's no missing data. Now I'll document this and give you the full report.
{"file_path": "/home/agent/.claude/projects/-home-magik6k-lcad-wasm-freecad-port/memory/freecad-port-state-pointer.md", "content": "---\nname: freecad-port-state-pointer\ndescription: Where the real FreeCAD-wasm session history/memory lives…File created successfully at: /home/agent/.claude/projects/-home-magik6k-lcad-wasm-freecad-port/memory/freecad-port-state-pointer.md (file state is current in your context — no need to Read it back)
{"file_path": "/home/agent/.claude/projects/-home-magik6k-lcad-wasm-freecad-port/memory/MEMORY.md", "content": "# Memory index\n\n- [FreeCAD port state pointer](freecad-port-state-pointer.md) — real session history/memory is under `-home-ma…File created successfully at: /home/agent/.claude/projects/-home-magik6k-lcad-wasm-freecad-port/memory/MEMORY.md (file state is current in your context — no need to Read it back)
I'm putting together a final report that covers where things stand right now, walks through the session history to clarify which session is current and why the resume attempt didn't work out, resolves any timestamp confusion, outlines what's working versus what's still in progress, and lays out the best path forward.
The user is asking about Claude Code's resume functionality. There's a `claude --resume <session-id>` command (or `-r` shorthand) that can bring back a specific session, though it needs to be run from the project directory where the session was created. Without arguments, `claude --resume` shows an interactive picker. There might also be `claude --continue` or `-c` for resuming the most recent session. One thing to keep in mind: the session was marked as still-running in the background, so they may need to stop it first via `claude agents` before they can resume it locally, or they could attach to it directly from there. I could quickly verify the exact command syntax by checking `claude --help` to be completely sure.
{"command": "claude --help 2>/dev/null | grep -iA2 -E 'resume|continue|session' | head -40", "description": "Check claude CLI resume flags"}Claude Code - starts an interactive session by default, use -p/--print for
non-interactive output
--
--agent <agent> Agent for the current session. Overrides
the 'agent' setting.
--agents <json> JSON object defining custom agents (e.g.
--
--bg, --background Start the session as a background agent
and return immediately (manage with
`claude agents`)
--
-c, --continue Continue the most recent conversation in
the current directory
--dangerously-skip-permissions Bypass all permission checks.
--
--effort <level> Effort level for the current session
(low, medium, high, xhigh, max)
--exclude-dynamic-system-prompt-sections
--
--fork-session When resuming, create a new session ID
instead of reusing the original (use
with --resume or --continue)
--from-pr [value] Resume a session linked to a PR by PR
number/URL, or open interactive picker
with optional search term
--
--model <model> Model for the current session. Provide
an alias for the latest model (e.g.
'fable', 'opus', or 'sonnet') or a
--
-n, --name <name> Set a display name for this session
(shown in the prompt box, /resume
picker, and terminal title)
--no-chrome Disable Claude in Chrome integration
--no-session-persistence Disable session persistence - sessions
will not be saved to disk and cannot be
resumed (only works with --print)
--output-format <format> …[truncated]{"command": "claude --help 2>/dev/null | grep -B1 -A3 -E '^\\s+(-r|--resume)'; echo ===; claude agents --help 2>/dev/null | head -20", "description": "Check --resume flag and claude agents subcommand"} --output-format=stream-json)
-r, --resume [value] Resume a conversation by session ID, or
open interactive picker with optional
search term
--safe-mode Start with all customizations
===
Usage: claude agents [options]
Manage background agents
Options:
--add-dir <directory> Additional directory to allow tool
access to in dispatched sessions
(repeatable)
--agent <agent> Default agent for sessions dispatched
from agent view. Overrides the 'agent'
setting.
--all With --json: include completed sessions
(the full agent view list)
--allow-dangerously-skip-permissions Make bypass-permissions mode available
to dispatched sessions without
defaulting to it
--cwd <path> Show only background sessions started
under <path>
--dangerously-skip-permissions Alias for --permission-mode
bypassPermissionsTo resume the session, I need to navigate to the project directory and use the session ID with the resume command. The key thing to remember is that the session lookup is tied to the project directory, so running from `/home/magik6k/lcad-wasm` ensures the system can find the right session context. Before resuming, I should check if there's a background agent still registered from the previous run using `claude agents` — if one exists, I'll need to stop it first since it might block the resume. Since the sandbox restarted, the registration could be stale but still cause issues. I can also use `--fork-session` if I want to avoid modifying the original session state. One thing to keep in mind: the transcript is quite large at 12MB and was already compacted, so resuming will pick up from the compacted state. The session had already run out of context once before, so it'll likely resume right where it was waiting for the build notification.