Kaan kien tiffany/feature/docs editing adeu

[kien-ship-it]

Adeu DOCX Redlining Integration

Integrates the Adeu automated DOCX redlining engine (v0.9.0) into LaunchStack. LLM agents can now read, edit, diff, and accept changes in Word documents via HTTP, with edits appearing as native Track Changes.

What's included

Python sidecar (5 endpoints)

• POST /adeu/read — extract text from DOCX (with optional clean view)
• POST /adeu/process-batch — apply edits + review actions as tracked changes
• POST /adeu/accept-all — accept all tracked changes, return clean DOCX
• POST /adeu/apply-edits-markdown — preview edits as CriticMarkup markdown
• POST /adeu/diff — text-based diff between two DOCX files
• Health check extended to report Adeu availability and version

TypeScript adapter (src/lib/adeu/client.ts, src/lib/adeu/types.ts)

• Typed async functions wrapping each sidecar endpoint
• ADEU_SERVICE_URL environment-based routing (Docker → sidecar, Vercel → serverless function, local → localhost)
• AdeuConfigError / AdeuServiceError error classes

Inngest background job (src/server/inngest/functions/modifyDocument.ts)

• document/modify.requested event handler with 3 retryable steps (fetch → modify → store)
• Serial processing (concurrency: 1), 422 validation errors marked as failed without retry

Vercel Python serverless function (api/adeu/index.py)

• Mirrors all 5 sidecar endpoints, no torch/ML deps, fits under 250MB Vercel limit

Docker Compose wiring

• Sidecar service with health check, ADEU_SERVICE_URL injected into app container

LLM tool-calling integration test (scripts/test-adeu-llm-loop.ts)

• End-to-end test: real LLM (gpt-4o) autonomously reads a SAFE template, previews edits, then applies them via processDocumentBatch, producing a modified DOCX with Track Changes on disk

Test coverage

Suite	File	Tests	What it covers
Sidecar routes (Python)	sidecar/tests/test_adeu_routes.py	10	All 5 endpoints + health check, valid/invalid inputs, error codes
Adapter unit tests	__tests__/api/adeu/adapter.test.ts	47	All adapter functions, FormData construction, error handling, config errors
Adapter PBT — round-trip	__tests__/api/adeu/adapter-roundtrip.pbt.test.ts	6	Property 11: request/response round-trip for all adapters
Adapter PBT — errors	__tests__/api/adeu/adapter-errors.pbt.test.ts	6	Property 12: error propagation for random HTTP status codes
Inngest function	__tests__/api/adeu/modifyDocument.test.ts	16	Registration, concurrency, step execution, 422 handling, DB updates, route registration
LLM integration	scripts/test-adeu-llm-loop.ts	manual	Full agent loop: LLM → read → preview → apply → DOCX output

Run tests:

# TypeScript (75 tests)
npx jest __tests__/api/adeu/

# Python sidecar (10 tests)
PYTHONPATH=sidecar /tmp/sidecar-test-venv/bin/python -m pytest sidecar/tests/ -v

# LLM integration (requires running sidecar + OPENAI_API_KEY)
/tmp/sidecar-test-venv/bin/python scripts/run-adeu-sidecar.py &
npx tsx scripts/test-adeu-llm-loop.ts

Key files changed

src/lib/adeu/types.ts                              # TypeScript interfaces
src/lib/adeu/client.ts                             # TypeScript adapter
src/server/inngest/client.ts                       # DocumentModifyEvent type
src/server/inngest/functions/modifyDocument.ts      # Inngest function
src/app/api/inngest/route.ts                       # Route registration
sidecar/app/schemas/adeu.py                        # Shared Pydantic schemas
sidecar/app/routes/adeu.py                         # FastAPI endpoints
sidecar/app/main.py                                # Router + health check
sidecar/Dockerfile                                 # Separate Adeu pip layer
sidecar/requirements.txt                           # adeu==0.9.0
api/adeu/index.py                                  # Vercel serverless function
api/adeu/requirements.txt                          # Vercel-only deps (no torch)
docker-compose.yml                                 # Sidecar service + env wiring
.env.example                                       # ADEU_SERVICE_URL docs
.vercelignore                                      # Exclude sidecar/ from Vercel
scripts/test-adeu-llm-loop.ts                      # LLM integration test
scripts/run-adeu-sidecar.py                        # Lightweight sidecar runner

---

LLM integration test evidence

The test at scripts/test-adeu-llm-loop.ts was run against the SAFE template at public/templates/safe-template.docx. The LLM (gpt-4o) autonomously executed the full tool-calling loop:

Artifacts produced:

• Log: adeu-llm-test.log — full timestamped trace of every LLM decision, tool call, and tool result
• Modified DOCX: test-output/safe-modified-1775385077680.docx — the actual output document with Track Changes

What the log shows (3 iterations):

Iteration 1: LLM calls read_docx(clean_view=false)
             → Sidecar returns 5,632 chars of document text

Iteration 2: LLM calls edit_document with 3 edits using unique surrounding context:
             - "Company: {company_name}, a" → "Company: Tech Innovators Inc., a"
             - "Investor: {investor_name}, with an address at" → "Investor: John Doe Ventures, with an address at"
             - 'The "Valuation Cap" for this SAFE is {valuation_cap}.' → 'The "Valuation Cap" for this SAFE is $10,000,000.'
             → Sidecar returns CriticMarkup preview (5,994 chars)

Iteration 3: LLM calls apply_edits(author_name="Contract Review Assistant", ...)
             → Sidecar applies all 3 edits as Track Changes
             → Summary: { applied_edits: 3, skipped_edits: 0 }
             → Modified DOCX written to test-output/

Verified output document contains native Track Changes:

Company: {--{company_name},--}{++Tech Innovators Inc.,++}{>>[Chg:5] Contract Review Assistant
Investor: {--{investor_name},--}{++John Doe Ventures,++}{>>[Chg:3] Contract Review Assistant
The "Valuation Cap" for this SAFE is {--{valuation_cap}.--}{++$10,000,000.++}{>>[Chg:1] Contract Review Assistant

The output DOCX can be opened in Word or Google Docs to see the redlines with author attribution.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
launch-stack	Ready	Preview, Comment	Apr 9, 2026 5:25am
pdr-ai-v2	Ready	Preview, Comment	Apr 9, 2026 5:25am

[Deodat-Lawson]

Code Review: Kaan-Kien-Tiffany/feature/docs-editing-adeu

This branch adds an ADEU (document editing/redlining) feature across ~3,600 lines in 31 files.

What This Branch Does

1. Python sidecar (sidecar/app/routes/adeu.py) — FastAPI endpoints for reading, diffing, redlining, and accepting changes in DOCX files using an adeu library
2. Vercel serverless proxy (api/adeu/index.py) — Python handler that proxies ADEU requests for Vercel deployment
3. TypeScript client (src/lib/adeu/client.ts) — Fetch-based client wrapping all sidecar endpoints
4. Inngest function (src/server/inngest/functions/modifyDocument.ts) — Background job that fetches a DOCX, sends it to the sidecar for redlining, and saves the result
5. Tests & scripts — Unit tests, property-based tests, integration scripts, and Docker Compose setup

---

Critical Issues

Severity	Issue	Location
Critical	Missing API route — vercel.json rewrites /api/adeu/* to a non-existent handler	vercel.json:8
Critical	Base64 DOCX passed through Inngest step outputs will hit 4MB limit for any real document	modifyDocument.ts:49-92
Critical	Global concurrency limit of 1 serializes ALL users' doc edits	modifyDocument.ts:20
High	cgi.FieldStorage is deprecated (Python 3.11) and removed in Python 3.13	api/adeu/index.py:144-157
High	No failure status tracking — failed docs are indistinguishable from successful ones	modifyDocument.ts:29-30
High	Sync DOCX processing blocks the async event loop in all sidecar handlers	sidecar/app/routes/adeu.py
High	No upload size limits — memory exhaustion DoS possible	Both adeu.py routes and index.py

Security Issues

Severity	Issue	Location
High	Internal exception details leaked to clients in all 500 paths	Both Python files
High	OPENAI_API_KEY in Docker build args — visible in image layer metadata	docker-compose.yml:14-15
Medium	No authentication on sidecar requests	client.ts — all fetch calls
Medium	Content-Disposition header injection via unsanitized filenames	adeu.py:146, index.py:290
Medium	Container runs as root (no USER directive)	sidecar/Dockerfile
Medium	adeu-llm-test.log committed — leaks developer filesystem path	adeu-llm-test.log

Code Quality / Architecture

Severity	Issue	Location
Medium	Uncaught JSON.parse on malformed x-batch-summary header	client.ts:103
Medium	No fetch timeouts — hung sidecar blocks until platform kills the function	client.ts
Medium	Side-effecting DB write inside memoized step.run — will re-execute on Inngest replay	modifyDocument.ts:71-74
Medium	ADEU import is unconditional but main.py has "degraded" health path that's dead code	main.py:17
Medium	Bare except Exception on import swallows real errors	index.py:39
Low	adeu installed twice in Dockerfile	Dockerfile:13-19

Test Gaps

Issue	Location
Inngest handler test is vacuous — if (handler) guard silently skips test body if SDK shape changes	modifyDocument.test.ts:145-146
Route registration test always passes (expect(true).toBe(true))	modifyDocument.test.ts:384-392
Missing negative test cases for /adeu/diff, /adeu/accept-all, /adeu/apply-edits-markdown	test_adeu_routes.py
Hardcoded version 0.9.0 assertion will break on upgrade	test-sidecar-integration.sh:62
test-output/*.docx binary files committed to the repo	test-output/

---

Top Recommendations

1. Fix the missing /api/adeu route or the Vercel deployment is broken
2. Use Vercel Blob or S3 instead of base64 through Inngest steps to avoid the 4MB limit
3. Key the concurrency limit by documentId instead of global limit: 1
4. Add a status field to document DB updates so failures are trackable
5. Remove adeu-llm-test.log and test-output/ from version control and add to .gitignore
6. Wrap sync DOCX processing in asyncio.to_thread() in the sidecar
7. Add fetch timeouts and sidecar auth in the TypeScript client

[kien-ship-it]

On it!

[kien-ship-it]

Fix 1.1 — Blob storage for large DOCX modifyDocument.ts now calls putFile() inside step.run("modify-document") and returns { summary, blobUrl: stored.url } instead of base64.

Fix 1.2 — Per-document concurrency key concurrency: [{ limit: 1, key: "event.data.documentId" }] — key field present.

Fix 1.3 — Replace cgi.FieldStorage
index.py
no longer imports cgi. Uses manual boundary parsing via _parse_multipart() with regex-based Content-Type boundary extraction.

Fix 1.4 — Failure status tracking onFailure handler sets ocrMetadata: { error: "editing_failed", errorMessage, failedAt }. Validation error path also writes failure metadata via step.run("record-validation-failure").

Fix 1.5 — asyncio.to_thread All 5 routes in adeu.py wrap sync adeu calls in asyncio.to_thread() — read_docx, process_batch (_run_batch), accept_all (_run_accept_all), apply_edits_markdown (_run_apply_markdown), diff_docx (_run_diff).

Fix 1.6 — Upload size validation Both files have MAX_UPLOAD_SIZE = 50 * 1024 * 1024. adeu.py checks in _read_upload(). index.py checks content-length in handler() before routing.

Fix 1.7 — Generic error responses All exception handlers in both adeu.py and index.py now return "Internal server error" instead of f"Internal error: {exc}". Server-side logging via logger.exception().

Fix 1.8 — Remove secret from build args docker-compose.yml x-app-build-args no longer contains OPENAI_API_KEY. Comment explains why. OPENAI_API_KEY remains in app service environment.

Fix 1.9 — Sidecar authentication client.ts has getAuthHeaders() returning { "X-API-Key": process.env.SIDECAR_API_KEY } on all fetch calls. adeu.py has verify_api_key dependency on all routes via dependencies=[Depends(verify_api_key)]. conftest.py sets SIDECAR_API_KEY env and injects header.

Fix 1.10 — Filename sanitization Both adeu.py and index.py have sanitize_filename() using re.sub(r'[\r\n";/\]', '_', name). Applied before all Content-Disposition headers.

Fix 1.11 — Non-root Docker user sidecar/Dockerfile has RUN useradd --create-home --shell /bin/bash sidecar and USER sidecar before CMD.

Fix 1.12 — Remove committed log, update .gitignore .gitignore now has *.log entry after the debug log entries.

Fix 1.13 — Safe JSON.parse client.ts wraps JSON.parse(summaryHeader) in try/catch with console.warn fallback to default summary.

Fix 1.14 — Fetch timeout client.ts has fetchWithTimeout() using AbortController + setTimeout with ADEU_TIMEOUT_MS (default 30s). All 5 adapter functions use it.

Fix 1.15 — Separate DB update step modifyDocument.ts has DB writes in separate step.run("update-document-record") and step.run("record-validation-failure") blocks, not inside the DOCX processing step.

Fix 1.16 — Conditional ADEU router import main.py wraps adeu_router import in try/except at registration time. Health endpoint returns degraded status when adeu unavailable.

Fix 1.17 — Narrow import exception handling index.py uses nested try/except: outer catches ImportError with fallback, inner catches ImportError with logger.warning, and both have except Exception with logger.error + raise.

Fix 1.18 — Single adeu install sidecar/Dockerfile no longer has explicit pip install adeu==0.9.0. adeu==0.9.0 is in
requirements.txt
. Comment says "adeu is installed via requirements.txt".

Fix 1.19 — Explicit handler assertion modifyDocument.test.ts line: expect(handler).toBeDefined(); — no more if (handler) guard.

Fix 1.20 — Meaningful route registration test Last test now imports modifyDocument, asserts it's defined, and checks opts?.id === "modify-document". No more expect(true).toBe(true).

Fix 1.21 — Negative test cases test_adeu_routes.py has TestDiffErrors, TestAcceptAllErrors, and TestApplyEditsMarkdownErrors classes with missing file and invalid DOCX tests.

Fix 1.22 — Dynamic version check test-sidecar-integration.sh reads EXPECTED_ADEU_VER from
requirements.txt
via grep -E '^adeu==' instead of hardcoding 0.9.0.