261 lines
31 KiB
Markdown
261 lines
31 KiB
Markdown
# Progress Log
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## Session: 2026-07-15 (CAD Semantics and Crop)
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### Phase 23
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- Loaded the repository workflow plus planning, frontend, and Go implementation guidance.
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- Added the CAD semantic-context and non-destructive crop request as new phases without changing unrelated work.
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- Fixed the product invariants: preserve the source, create a sibling crop, and keep model semantics out of visible chat copy.
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- Completed the end-to-end design across worker metadata, durable node context, hidden Agent Chat content, vector crop UI, sibling placement, and PostgreSQL persistence.
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- Added the optional `semanticContext` node field to the API specification before generated/server implementation.
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### Phase 24
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- Added versioned CAD metadata containing bounded source/format/unit, drawing bounds, layer/block/entity counts, visible text, and crop-intersection entries.
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- Persisted compact node semantic context through the API/domain/PostgreSQL/SQLC/canvas snapshot paths.
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- Added hidden `cad-context` Agent Chat contents: model prompt and memory retain them, while optimistic and persisted user copy exclude them.
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- Added vector-toolbar crop, transparent WebP output, crop-specific semantic filtering, right-side sibling placement, source preservation, and automatic selection/reference of the new crop.
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- Focused Go application/logic/PostgreSQL tests pass; frontend typecheck and all 16 frontend tests pass.
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- Repaired legacy GBK CAD labels and locked the behavior with a focused converter regression.
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- Re-ran both supplied files: exact DXF semantics complete in 0.37s and exact DWG semantics in 11s, with bounded contexts of 1,050 and 1,912 characters respectively.
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- Increased vector crop raster output to a 2048px long edge so small selections from large drawings remain useful to the image model; sibling canvas display stays bounded to 220-640px.
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### Phase 25
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- All 20 frontend tests pass, including CAD conversion, GBK labels, semantic crop filtering, immutable sibling creation, readable crop sizing, hidden model context, WebP submission, and vector recognition.
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- `go mod tidy`, full `go test ./...`, `go build ./...`, API validation, locale parsing, frontend production build, and `git diff --check` pass.
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- Browser setup again reported no available backend, so live crop/hover/request inspection could not be repeated; the active Vite preview still responds at `http://127.0.0.1:5174`.
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- Restored the repository's pre-existing `frontend/next-env.d.ts` development route import after production builds.
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### Phase 26
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- Documented CAD semantic metadata, hidden Agent Chat context, durable node persistence, and non-destructive crop behavior in the root README and API guide.
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- Completed final scope review without reverting unrelated worktree changes.
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- Started an isolated updated backend on `http://127.0.0.1:8889` and the verified production frontend on `http://127.0.0.1:5175`; the proxied health endpoint returns the updated service successfully.
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## Session: 2026-07-15 (Vector Reference Follow-up)
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### Phases 21-22
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- Restored the existing CAD work and regression context after session handoff.
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- Confirmed the two independent failures: nested-parenthesis directives bypass the capsule parser, and SVG bytes reach a raster-only image-generation API.
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- Locked the product boundary: SVG remains the canvas source; only model-bound references become temporary transparent WebP assets.
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- Ran the focused frontend suite and reproduced both English and Chinese nested-parenthesis directives as deterministic failures; the raster WebP baseline still passes.
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- Fixed nested-parenthesis directive parsing; all English, Chinese, and existing raster capsule parser cases pass.
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- Added browser-side SVG detection by name, URL, response MIME, and content sniffing; model-bound SVG references render to a transparent 2048px WebP derivative, upload once, and cache by source URL.
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- Wired both Agent Chat and the canvas image-generator composer through the shared submission adapter while retaining original SVG canvas content and display names.
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- The 14-test frontend suite, TypeScript build, and diff whitespace checks pass.
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- In-app browser initialization succeeded but no browser backend is currently available, so capsule hover and live request inspection remain unavailable in this environment.
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- Production Next/Vite builds pass, the exact nested CAD filename regression passes, and the active Vite preview remains available at `http://127.0.0.1:5174`.
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- Restored the pre-existing `frontend/next-env.d.ts` development route import after Next rewrote it during the production build.
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## Session: 2026-07-10
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### Phase 1: Architecture Discovery
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- **Status:** in_progress
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- Read repository instructions and the applicable Go, frontend, planning, and browser verification skills.
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- Captured the missing backend ownership, project binding, selector, and chat-context requirements.
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- Confirmed the existing go-zero API, SQLC/PostgreSQL, memory-store, and code-generation toolchain.
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- Located the project domain/repository and established the project object as the server-side Brand Kit context boundary for chat and generation.
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- Traced Agent Chat through planning, research, conversation, and asynchronous generation; identified one project-hydration point plus shared prompt builders for complete coverage.
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- Added the Home composer Brand Kit picker and empty create action to the implementation scope.
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- Mapped the Home composer action row and frontend project hydration paths for `brandKitId` integration.
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- Re-read the active plan after session recovery and confirmed the existing frontend edits are limited to the Brand Kit feature surface.
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- Loaded the project go-zero workflow plus the applicable planning, Go, and frontend implementation guidance.
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- Completed architecture discovery, including authentication enforcement, SQLC persistence, async job reloads, direct image prompts, and frontend project hydration.
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- Chose a versioned JSON document API with server-side schema validation and prompt compilation; project responses expose only `brandKitId`, never compiled context.
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- Added and validated the API-first contract for Brand Kit list/upsert/delete, project binding, optional project-creation selection, and project response hydration.
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- Generated go-zero handlers, logic shells, routes, and types through the local `mcp-zero` stdio server.
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- Added SQLC schema and queries for user-owned versioned Brand Kits and optional project bindings, then regenerated SQLC code.
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- Implemented memory/PostgreSQL stores, document validation, single-default enforcement, server-side context compilation, project binding cleanup, and API logic.
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- Hydrated the active Brand Kit for synchronous chat, asynchronous create/follow-up jobs, conversations, planner memory, creative prompts, and direct/fallback image prompts.
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- Added focused ownership/default/binding/context-injection tests.
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- Replaced browser-local Brand Kit persistence with authenticated APIs, including a one-time per-user migration.
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- Added reusable Brand Kit selectors to the Home composer and canvas title bar; project creation and binding now send only the selected ID.
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- Added server-side Brand Kit asset resolution so uploaded logos, covers, and references reach image generation after user references.
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- Added Brand Kit API documentation and ownership/default/binding semantics to the server docs.
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## Test Results
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| Test | Result | Status |
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| `goctl api validate -api img_infinite_canvas.api` | `api format ok` | pass |
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| Targeted Go tests: application, PostgreSQL/memory repositories, logic, service context, error mapping, and prompt agents | all pass | pass |
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| `go test ./...` | all packages pass | pass |
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| `go build ./...` | build succeeds | pass |
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| `npx tsc -b` | typecheck succeeds | pass |
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| `npm run build` | Next.js and Vite production builds succeed; existing large-chunk warning only | pass |
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## Session: 2026-07-11
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### Phase 7: Device Management Discovery and Design
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- **Status:** in_progress
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- Loaded repository instructions, go-zero workflow rules, frontend design guidance, and the existing planning state.
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- Confirmed a clean worktree before starting the device management task.
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- Located an existing account-management component and server device list/removal logic for focused inspection.
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- Confirmed the current device endpoints are placeholder implementations over stateless user-only tokens; selective revocation is not yet real.
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- Completed the session-registry design, including token `sid`, legacy-token migration, request metadata context, throttled last-seen updates, expiry filtering, and atomic revoke semantics.
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### Phase 8: Device Management Implementation
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- **Status:** in_progress
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- Added the maintained `github.com/mileusna/useragent` dependency for normalized, display-only device metadata.
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- Implemented token `sid` claims, session context, UA normalization, memory/PostgreSQL session persistence, active-session authentication, last-seen throttling, listing, revoke-others, and logout revocation.
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- First targeted test run compiled successfully; the legacy placeholder test failed because removal now correctly requires a current authenticated session context. The test is being upgraded to the production contract.
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- Replaced the placeholder test with multi-device lifecycle coverage and added UA parsing, legacy migration, revocation, logout, and middleware metadata/session-context tests.
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- Targeted Go tests now pass: `go test ./internal/modules/auth ./internal/handler`.
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- Rebuilt the account device section with explicit async states, semantic rows, normalized metadata, responsive stacking, duplicate-submit protection, optimistic post-removal reconciliation, and aligned Chinese/English copy.
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- Frontend TypeScript validation passes: `npx tsc -b`.
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- Added the follow-up requirement for server-configurable desktop/mobile web-session limits; implementation will extend the API response spec before regeneration.
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- Updated and validated `img_infinite_canvas.api`, then regenerated go-zero types with the documented `goctl` fallback; the device list response now includes `limits.desktop` and `limits.mobile`.
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- Added `Auth.DeviceLimits.Desktop/Mobile` defaults to local and deployment config, wired them through the auth service, and replaced hard-coded UI counts with API-driven interpolation.
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- Documented the configuration and effective API policy in `server/README.md` and `server/API.md`.
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- Focused Go tests and frontend TypeScript validation pass after the configurable-limit change.
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- Full verification passes: `go mod tidy`, API validation, `go test ./...`, `go build ./...`, and `npm run build` (only the existing Vite large-chunk warning remains).
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- Initial alternate-port preview starts exposed two environment constraints: go-zero requires a config filename extension and Next permits one dev server per repo. Switched to a `.yaml` stdin symlink for the backend and the production Next server for the second frontend port.
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- The isolated preview is live at `http://localhost:5174` with the new backend on `http://localhost:8889`; the frontend page, auth-options proxy, and protected-device 401 boundary respond correctly.
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- The in-app browser runtime has no available browser backend in this environment, so authenticated screenshot inspection could not be completed there.
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- Race-enabled auth/middleware tests pass, frontend typecheck and diff checks pass, and the preview proxy still enforces a 401 on unauthenticated device access.
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- Reproduced the reported limit bug with a deterministic failing service test: two desktop tokens remained valid with `Desktop: 1`.
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- Implemented atomic same-type enforcement in memory and PostgreSQL stores; new logins keep the newest session and revoke oldest overflow sessions.
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- Added device-list reconciliation for sessions created before enforcement and verified current-session preservation.
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- Changed the device API timestamp contract to RFC3339 UTC and formatted it with the browser's local timezone via `Intl.DateTimeFormat`.
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- Regression tests now pass for configured desktop limit 1, pre-enforcement reconciliation, concurrent PostgreSQL logins, and timezone-neutral API timestamps.
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### Phase 11: Visual Annotation Discovery and Design
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- **Status:** complete
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- Loaded the repository workflow, supplied HTML reference, frontend design guidance, and existing planning state.
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- Located the image toolbar/action mode owner, the shared canvas action generation route, and the separate general-purpose Agent Chat annotation feature.
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- Established the implementation boundary: image-local geometry plus editable per-mark instructions, submitted through the existing image action flow.
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- Chose a clean-source plus annotated-guide submission model so freehand and shape marks are visible to the image model without becoming output pixels.
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- Confirmed the panel can reuse the active canvas model, existing asset upload, asynchronous node action, task event, and result replacement paths.
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### Phase 12: Visual Annotation Implementation
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- **Status:** in_progress
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- Started the API-first action contract extension and canvas-native visual annotation component implementation.
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- Added and validated the API request field for an uploaded annotation guide, then regenerated go-zero types through the local `mcp-zero` stdio server.
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- Added the toolbar entry, drawing overlay, four visual tools, numbered mark list, editable instructions, undo/delete, shared model picker, responsive panel placement, and guide rasterization.
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- Added backend validation, prompt constraints, clean-source plus guide-image inputs, action lifecycle copy, generator metadata, and focused action coverage.
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- Targeted Go tests, locale JSON parsing, and frontend TypeScript validation pass.
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- Updated the action contract so visual annotation preserves the original and generates into a sibling copy placed to its right.
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## Session: 2026-07-15
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- Started Phase 27 after reproducing the warning directly from the source stack: `.canvas-stage` uses React `onWheel`, and its handler calls `preventDefault()` at the reported line under a passive delegated listener.
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- Added the listener-registration regression first; its red run fails because the non-passive canvas wheel adapter does not yet exist.
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- Added the element-level wheel adapter, switched the canvas to the latest viewport ref, removed React `onWheel`, and preserved the existing interactive-surface bypass behavior.
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- The focused non-passive registration/cleanup test, TypeScript build, and diff check now pass.
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- Added Phase 28 after confirming Crop existed only in the selected-image/vector floating toolbar, not in `workspace-toolbar` as requested.
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- Browser instrumentation found that the first native-listener effect ran before the project canvas mounted. Bound the effect to `project.id` so the non-passive listener attaches when `.canvas-stage` appears.
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- Added the Crop icon immediately after Text, with a visible disabled state, active crop state, and selection-tool handoff before opening the existing overlay.
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- Full frontend verification passes with 21 tests and both Next/Vite production builds. The supplied DWG still converts in about 10.5 seconds to a 9.06 MB semantic SVG with 748 reusable block instances.
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- Browser verification confirms `Text -> Crop -> Image` ordering, disabled/enabled Crop states, active state, one mounted crop overlay, functional 100% -> 91% wheel zoom, and no passive-listener warnings.
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- Restarted the verified frontend preview on `http://127.0.0.1:5175` against the existing updated backend on port 8889.
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- Started Phase 29 from the enlarged single-image screenshot: the workspace Crop target currently resolves only from `selectedImageNode`, so the button remains disabled even though there is one obvious image target.
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- Added visible-stage crop geometry regressions first; the red run failed on the intentionally missing viewport geometry exports.
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- Added shared crop viewport geometry, single-visible-image target resolution, deferred auto-selection crop entry, and selection-anchored crop controls.
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- All 23 frontend tests and the Next/Vite production build pass.
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- Browser verification confirms the exact enlarged-single-image case and the multi-image ambiguity guard; the updated preview is running at `http://127.0.0.1:5175`.
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- Confirmed the final compatibility boundary: old project CAD nodes will not be migrated or heuristically enriched; the user will re-upload source DWG/DXF files so every retained CAD node uses the current semantic conversion contract.
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- Re-ran the final verification after removing legacy recovery scope: all 20 frontend tests, full Go tests, API validation, locale parsing, Go build, Next build, Vite build, and diff checks pass.
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- Restored Next's development route type import after production build and restarted the updated preview at `http://127.0.0.1:5175`; its backend proxy to `http://127.0.0.1:8889` returns HTTP 200.
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## Session: 2026-07-16
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### Phase 31: Canvas Performance and LeaferJS Evaluation
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- **Status:** complete
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- Started a diagnosis-only performance pass after the user reported canvas lag and pointed to `leaferjs/leafer-ui` as the reference engine.
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- The evaluation will establish browser frame-time and long-task baselines before deciding whether LeaferJS should replace the full renderer or only the high-cost visual layer.
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- Mapped the current renderer as React/DOM with viewport state updates and full-array node updates on high-frequency interaction.
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- Reviewed LeaferJS's retained scene tree, Canvas renderer, hit testing, interaction, and editor capabilities; vendor benchmark claims remain unverified for the application's CAD/image workload.
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- Identified viewport-dependent props and fresh per-node callbacks/objects that defeat a simple memoization fix, plus full-document alignment and node-array work on each drag event.
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- Confirmed the current LeaferJS package baseline (2.2.2, MIT) and kept dependency installation out of the diagnosis phase.
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- Found per-update persistence effect/timer churn and prepared a node-count-scaled Playwright baseline for zoom and drag interactions.
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- Reproduced near-linear interaction degradation from 100 to 500 to 1000 nodes, reaching roughly 83ms p95 frame intervals at 1000 nodes.
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- Ran the differential control on the same 1000-node DOM: direct world and node transforms held about 9.2ms p95, confirming React-path overhead as the primary bottleneck.
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- The initial exact-DWG paint fixture used the raw worker intermediate and correctly failed SVG decoding; switched the probe to capture the normalized asset from the real browser upload path.
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- Captured the final 8.87 MB SVG from the real UI upload and measured a single CAD node at 158-192ms p95 during zoom.
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- Proved the cached-texture control: a one-time 1200 x 839 transparent WebP display preview reduced the same interaction to 9.2ms p95 while leaving the source contract separable.
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- Confirmed that both the general retained renderer and complex-vector texture caching are required; neither optimization alone covers the reported workload.
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- Mapped LeaferJS `App` ground/tree/sky layers, imperative `zoomLayer`, image caching, and editor events onto the existing canvas domain and React overlay responsibilities.
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- Benchmarked LeaferJS itself rather than relying on vendor claims: 1000 rectangles held 9.2ms p95, compared with about 83ms in the current React path.
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- Demonstrated that raw complex SVG remains slow in Leafer (275.4ms p95), while an application-owned transparent WebP texture restores 9.1ms p95.
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- Completed the evaluation with an incremental renderer-adapter and vector texture-LOD recommendation; no production dependency or renderer code was changed during diagnosis.
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### Phase 32: Leafer Renderer and Vector Texture Cache
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- **Status:** in_progress
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- Started the production implementation after user approval, using the existing `CanvasNode[]` and SVG/CAD semantic contracts as the source of truth.
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- Chosen boundary: persist a separate render-preview URL, render supported visual nodes through LeaferJS, and keep React UI/overlays plus source-based crop/export/model behavior.
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- Traced the explicit canvas-node field through the API/domain/PostgreSQL/snapshot layers and the paired source/preview upload changes needed for atomic vector imports.
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- Resumed Phase 32 with a clean two-file partial diff: the API spec and generated Go type already expose optional `renderContent`; persistence, preview generation, and renderer work remain outstanding.
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- Completed `renderContent` plumbing through the frontend domain/snapshot normalizer, Go domain/API mappers, PostgreSQL schema/queries/repository, SQLC generation, mapper regression coverage, and API documentation.
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- Added one-time transparent WebP generation for imported SVG/CAD sources, paired source/texture uploads with partial-upload cleanup, optimistic local texture display, and preview-preference helpers for the canvas and thumbnail surfaces.
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- Installed `leafer-ui@2.2.2` and added a retained Leafer renderer for successful image nodes and manual frames. Vector nodes enter Leafer only when their transparent WebP texture is present; React remains the hit-target, selection, toolbar, crop, and text-edit overlay.
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- Moved wheel zoom, canvas pan, and ordinary node drag frames onto imperative Leafer/DOM transforms. React viewport/node state now commits after interaction settles or ends, and drag alignment guides render imperatively.
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- Focused/full verification passes after the renderer migration: 29 frontend tests, strict TypeScript compilation, and the complete Go test suite.
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### Phase 33: Workspace Crop Drag Selection
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- **Status:** complete
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- Implemented the clarified two-stage workspace Crop tool: activation now enters a crosshair preselection state instead of immediately opening a full crop selection.
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- A click selects the connected color-bounded area under the pointer from the displayed raster/WebP texture; the selection can never exceed the currently visible part of the image.
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- Holding the left button and dragging draws a live rule-of-thirds selection, clamps it to the visible target bounds, and opens the existing crop editor on release.
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- The existing source-preserving CAD/SVG crop, crop-specific semantic context, raster replacement behavior, presets, resizing, and confirm/cancel flow remain unchanged.
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- Added synthetic color-boundary and visible-range drag regressions. All 35 frontend tests, strict TypeScript compilation, `git diff --check`, and the Next/Vite production build pass.
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- Benchmarked the maximum fully connected 640 x 480 color analysis at about 22ms and confirmed the updated single preview server responds at `http://127.0.0.1:5175`.
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- The configured in-app browser backend remained unavailable, so final interactive visual inspection is left to the running local preview; source-level interaction coverage and HTTP verification pass.
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### Phase 30: Native-Resolution Vector Crop Fidelity
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- **Status:** in_progress
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- Reproduced the user-visible symptom from the supplied comparison: the cropped transparent WebP has substantially thicker CAD strokes and degraded text/detail than the source SVG.
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- Ranked the likely causes: low-resolution SVG rasterization followed by pixel upscaling, incorrect viewBox mapping, display-size mismatch, then WebP compression.
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- Started a focused regression loop around SVG viewBox cropping and final-resolution rendering while preserving the existing raster crop path.
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- Added the red regression for normalized crop mapping against a non-zero SVG viewBox, then implemented the mapping and final-size source preparation.
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- Moved the browser SVG rewrite into the exported `createCroppedSvgRasterSource` production seam; `CanvasWorkspace` now draws the rewritten crop once at its final output dimensions while raster images retain the existing source-rectangle crop.
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- Chromium verification measured a representative non-scaling CAD stroke at 82px through the old low-resolution upscale and 4px through the new native crop, unchanged after transparent WebP encoding.
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- Reconfirmed that crop-specific CAD context travels with the sibling reference as hidden `cad-context` and remains available to the image-generation backend.
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- Full verification passes: 24 frontend tests, `pnpm exec tsc -b`, `go test ./...`, `go build ./...`, Next/Vite production builds, and `git diff --check`.
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- Restored Next's development route type import after the production build and restarted the updated preview at `http://127.0.0.1:5175`; the page and backend proxy return HTTP 200 with no browser console errors.
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### Phase 15: CAD Import Discovery and Design
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- **Status:** in_progress
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- Loaded the repository go-zero instructions plus the applicable Go, frontend, and file-planning skills.
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- Preserved the pre-existing `frontend/next-env.d.ts` change and added the DWG/DXF request as a new plan phase.
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- Completed the required workflow/skill reads and confirmed the frontend/backend toolchains and API-first constraint.
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- Located the canvas upload/drop surfaces, generic asset upload API, existing SVG render/export support, and canvas node model.
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- Traced the exact optimistic upload/save flow and confirmed converted CAD can reuse image-node rendering without changing persistence schemas.
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- Confirmed no local CAD converter binary is available and began evaluating a browser-capable dependency that genuinely handles both DXF and DWG.
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- Found an MIT-licensed client-side DWG-to-DXF WASM option and isolated the canvas-only import points that need extension.
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- Compared candidate packages and selected `@node-projects/acad-ts` for a single browser-side DWG/DXF-to-SVG pipeline, pending package-level verification.
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- Downloaded the exact package tarball for API/runtime inspection without changing repository dependencies yet.
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- First package source inspection raced extraction in a parallel tool call; no repository files were affected, and inspection will continue from the actual extracted path.
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- Verified the extracted package layout and confirmed the required reader/writer exports are browser-neutral.
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- Inspected reader and SVG writer internals; scheduled a runtime fixture because the packaged XML closing logic appears incomplete.
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- Ran a real DXF line/circle fixture: parsing succeeds, while raw SVG is invalid exactly as suspected. Conversion will include explicit normalization and validation around the third-party writer.
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- Completed CAD import discovery and selected a worker-based, frontend-only conversion design with no REST contract changes.
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- The first dependency install was blocked by parent-workspace discovery (`workspace:*`); no implementation files were changed by the failed command.
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- Installed `@node-projects/acad-ts@2.3.0` with the repository's pnpm toolchain; package manifest and lockfile are now updated.
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- Added the worker converter, SVG repair/sanitization, CAD-aware picker/drop flow, localized statuses, toolbar semantics, and README documentation. Initial typecheck found one third-party collection API mismatch.
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- Corrected the collection API mismatch; `pnpm exec tsc -b`, locale JSON parsing, and `git diff --check` now pass.
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- `pnpm build` passes for Next and Vite; Vite produced an isolated CAD worker chunk. Began real-browser verification against the already-running local stack.
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- Confirmed backend 8888 is this project but frontend 5173 is unrelated; will launch this frontend on 5174 and use upstream CAD fixtures for DXF/DWG tests.
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- Found a Next/Turbopack worker packaging defect before runtime release; the fix is to use Next's supported webpack mode for dev/build while keeping the existing isolated worker architecture.
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- Updated Next dev/build scripts to webpack mode and reran `pnpm build` successfully; both Next and Vite now produce executable isolated worker chunks.
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- Authenticated in a real browser, created a blank project, confirmed the CAD-aware toolbar control, and triggered a real AC1015 DXF import. Added a visible error toast because conversion failures were otherwise hidden in the canvas state.
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- Reproduced the user-visible failure with an upstream DXF fixture and captured the exact cause: the third-party parser returned no model-space entities. Converter dependency/path replacement is now required.
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- Received and identified the user's actual failing DXF as R11/R12 AC1009; switched verification to that exact file and stopped two stalled directory-list commands without touching the file.
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- Reproduced the exact failure in Node and reduced it to a minimal R12 DXF: `SvgXmlWriter` crashes when POINT/TEXT fill colors use inherited ByLayer index 256.
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- Extracted the worker's conversion core, resolved non-renderable inherited CAD colors before serialization, and added a Node regression test covering R12 point/text entities.
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- Imported the exact 915,957-byte user file through the Vite production worker, confirmed upload/save success, visually checked the rendered paper patterns, and confirmed reload persistence with no browser console errors.
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- Reproduced a Next-production-only zero-bounds result caused by class-name mangling in the CAD library's metadata lookup; restored exported constructor names inside the worker and added the mangled-name case to the regression test.
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- Verified the regular minified Next production build with both the exact R12 DXF and a real DWG fixture; both upload and render successfully without globally disabling minification.
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### Phase 18: General CAD Compatibility Follow-up
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- **Status:** in_progress
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- Reproduced the second user-provided DWG conversion outside the UI: parsing succeeds, but recursive block expansion produces a roughly 50 MB SVG and reaches the browser timeout boundary.
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- Profiled model-space entity contributions and isolated repeated `INSERT` serialization as the dominant time and output-size cost.
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- Confirmed the third-party insert path also ignores rotation and scale, making reusable block references a correctness fix as well as a performance fix.
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- Located the existing compact vector toolbar and confirmed SVG export already downloads the original SVG source.
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- Reduced the second DWG conversion from roughly 44 seconds/50 MB to about 9.6 seconds/8.5 MB by emitting 196 reachable block definitions once and 748 transformed references.
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- Imported the optimized DWG in the browser and reproduced the remaining tiny-content framing problem; traced the false extents to a source entity explicitly marked invisible.
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- Excluded invisible, off-layer, and frozen-layer entities from output and bounds. Reimport now produces a correctly framed 1200 x 839 vector node instead of 4074 x 1005 with large blank extents.
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- Confirmed uploaded SVG/CAD nodes show only the compact `矢量` toolbar and download action; corrected the source-SVG filename so downloads do not gain a duplicate `.svg` suffix.
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- Added focused regression coverage for inherited R12 colors, reusable repeated inserts, full insert transforms, MINSERT arrays, cyclic blocks, invisible extents, and SVG vector-node detection; all seven tests pass.
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- Rechecked the exact R12 DXF after the assembler change: conversion completes in about 0.3 seconds and emits a 2.14 MB reusable SVG.
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- Rechecked `/Users/liangxu/Desktop/花语江南6-204方案.dwg`: conversion completes in about 10 seconds, emits an 8.49 MB SVG instead of roughly 50 MB, and frames the visible drawing at a 1.43:1 aspect ratio.
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- Browser import, nonblank rendering, compact vector toolbar, source SVG download, save, and reload persistence all pass at `http://127.0.0.1:5174`.
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- Final `pnpm test`, TypeScript validation, `pnpm build`, and `git diff --check` pass; the build retains only the repository's existing Vite large-chunk warning.
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