Update ROADMAP.md to reflect completed work and add next-horizon items

Move all completed items (security hardening, structured logging, dark mode,
export, webhooks, scheduled analysis, multi-model, trend charts, CI, etc.)
into a new Completed section. Reorganize remaining P1/P2/P3 items to reflect
current priorities. Add new next-horizon items: historical diffing, patent
classification tagging, user API keys, batch export, and multi-tenant support.

Closes leeworks-agents/SPARC#1659

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ROADMAP.md

@@ -7,86 +7,131 @@ Semiconductor Patent & Analytics Report Core -- development priorities.
 SPARC is a patent analysis platform with a working end-to-end pipeline:
 Python/FastAPI backend, React/TypeScript frontend, PostgreSQL for persistence
 and caching, Docker Compose for local development, and Gitea Actions CI/CD for
-image builds. Core features (patent retrieval via SerpAPI, PDF parsing, LLM
-analysis via OpenRouter/Claude, batch processing, JWT authentication, analytics
-dashboard) are all implemented and functional.
+image builds and testing. Core features include patent retrieval via SerpAPI,
+PDF parsing, LLM analysis via OpenRouter (multi-model: Claude, GPT-4o, Gemini,
+Llama), batch processing, JWT authentication, analytics dashboard with patent
+trend charts, scheduled recurring analysis with alerting, webhook notifications
+(Slack/Discord), CSV and PDF export, S3/MinIO storage, side-by-side company
+comparison, and dark mode.
+
+---
+
+## Completed
+
+Items that have been implemented and merged into main.
+
+### Security hardening
+
+- ~~Rotate default JWT secret.~~ Startup check refuses to start with the
+  default secret in non-development environments.
+- ~~CORS allow-origins are hardcoded.~~ Allowed origins are now configurable
+  via environment variable.
+- ~~Database credentials in docker-compose.yml.~~ Compose references `.env`
+  for sensitive values.
+
+### Error handling and resilience
+
+- ~~`get_db_client()` creates a new `DatabaseClient` on every call.~~ Refactored
+  to a shared pooled singleton initialized at startup.
+- ~~No rate limiting on auth endpoints.~~ Rate limiting middleware added to
+  `/auth/login` and `/auth/register`.
+
+### Test coverage
+
+- ~~API tests bypass authentication.~~ JWT auth integration tests added (33
+  cases covering registration, login, protected routes, token refresh, and
+  admin-only endpoints).
+- ~~No test stage in CI.~~ Gitea Actions workflow now runs `pytest` and gates
+  the build.
+- ~~No linting or type checking in CI.~~ `ruff` (Python) and `tsc --noEmit`
+  (TypeScript) added to CI pipeline.
+
+### Backend
+
+- ~~Add structured logging.~~ Python `logging` module used throughout.
+- ~~Make LLM model configurable.~~ `MODEL` environment variable accepted;
+  multi-model support with per-analysis selection (GPT-4o, Gemini, Claude,
+  Llama).
+- ~~SERP cache TTL hardcoded.~~ `SERP_CACHE_TTL_HOURS` exposed as env var.
+- ~~Patent PDF storage.~~ S3/MinIO object storage backend added alongside
+  local filesystem. Volume mount requirement documented.
+- ~~`analyze_single_patent` assumes local file.~~ Auto-download from cached
+  metadata link integrated.
+- ~~`Patent.patent_id` typed as `int`.~~ Fixed to `str`.
+
+### Frontend
+
+- ~~No loading/error states.~~ Skeleton loaders and error states added to
+  Batch and Analytics pages.
+- ~~No dark mode.~~ Full dark mode support with theme-aware chart colors.
+- ~~Missing lockfile.~~ `package-lock.json` committed.
+
+### Features (formerly P3)
+
+- ~~Export analysis reports.~~ CSV and PDF export endpoints implemented.
+- ~~Comparison view.~~ Side-by-side company patent portfolio comparison added.
+- ~~Scheduled/recurring analysis.~~ APScheduler-based periodic re-analysis
+  with configurable interval and change-threshold alerting.
+- ~~Webhook/notification support.~~ Slack, Discord, and generic HTTP POST
+  webhooks with retry logic.
+- ~~Multi-model support.~~ Model picker in Analysis and Batch pages; backend
+  allow-list validation.
+- ~~Patent trend charts.~~ Filing frequency and category distribution
+  visualizations added to Analytics page.
+- ~~OpenAPI client generation.~~ TypeScript API client auto-generated from
+  FastAPI spec with CI freshness check.
 
 ---
 
 ## P1 -- High Priority
 
-These items address correctness, security, and reliability gaps that should be
+These items address correctness, reliability, and coverage gaps that should be
 resolved before broader production use.
 
-### Security hardening
+### Resilience
 
-- **Rotate default JWT secret.** `auth.py` ships a fallback
-  `sparc-secret-key-change-in-production` that will be used if `JWT_SECRET` is
-  unset. Add a startup check that refuses to start with the default secret in
-  non-development environments.
-- **CORS allow-origins are hardcoded.** `api.py` only permits
-  `localhost:3000` and `localhost:5173`. Make the allowed origins configurable
-  via environment variable so the dashboard works when deployed behind a real
-  domain.
-- **Database credentials in docker-compose.yml.** The compose file embeds
-  `postgres:postgres` in plain text. Reference a `.env` file or Docker secrets
-  instead.
+- **`_jobs` dict is in-memory only.** Job state is lost on API restart.
+  Persist job status in PostgreSQL or Redis so async batch results survive
+  restarts.
 
-### Error handling and resilience
+### Test coverage gaps
 
-- **`get_db_client()` in `auth.py` creates a new `DatabaseClient` on every
-  call.** This bypasses the connection pool and can exhaust database
-  connections under load. Refactor to share a single pooled client.
-- **`_jobs` dict is in-memory only.** Job state is lost on API restart. Persist
-  job status in PostgreSQL or Redis so async batch results survive restarts.
-- **No rate limiting on auth endpoints.** `/auth/login` and `/auth/register`
-  are unprotected against brute-force or abuse. Add rate limiting middleware.
-
-### Test coverage for auth and admin
-
-- The existing API tests (`tests/test_api.py`) bypass authentication entirely.
-  Add tests that exercise the JWT flow: registration, login, protected-route
-  access, token refresh, and admin-only endpoints.
+- **Export endpoint tests.** The CSV and PDF export endpoints (`/export/`)
+  lack test coverage. Add tests covering auth, success, 404, and edge cases.
+  *(Issue #1655)*
+- **Tracked company admin endpoint tests.** The `/admin/tracked` CRUD
+  endpoints and scheduler integration lack test coverage. *(Issue #1656)*
 
 ---
 
 ## P2 -- Medium Priority
 
-Improvements to usability, performance, and developer experience.
+Improvements to reliability, test coverage, and code quality.
 
-### Backend
+### Test coverage
 
-- **Add structured logging.** Replace `print()` calls throughout `analyzer.py`,
-  `serp_api.py`, and `llm.py` with Python `logging` so log levels and
-  formatting are consistent.
-- **Make LLM model configurable.** `llm.py` hardcodes
-  `anthropic/claude-3.5-sonnet`. Accept a `MODEL` environment variable to allow
-  switching models without code changes.
-- **SERP cache TTL is hardcoded to 24 hours.** Expose `SERP_CACHE_TTL_HOURS`
-  as an environment variable in `config.py`.
-- **Patent PDF storage.** PDFs are saved to a local `patents/` directory. For
-  containerized deployments, consider object storage (S3/MinIO) or at minimum
-  document the volume mount requirement more prominently.
-- **`analyze_single_patent` assumes local file path.** The method constructs
-  `patents/{patent_id}.pdf` and reads from disk, but does not download the PDF
-  first. Either integrate the download step or document the prerequisite.
-- **`Patent.patent_id` typed as `int` in `types.py` but used as `str`
-  everywhere.** Fix the type annotation to `str`.
+- **Webhook integration tests.** The retry logic, Slack/Discord payload
+  format, and multi-URL dispatch in `webhooks.py` need test coverage.
+  *(Issue #1657)*
+- **S3/MinIO storage backend tests.** `storage.py` has local filesystem tests
+  but no unit tests for the S3 backend (read, write, exists, delete,
+  error handling). *(Issue #1660)*
+- **`analyze_single_patent` auto-download path tests.** The auto-download
+  fallback (cache lookup, PDF download, FileNotFoundError) in
+  `analyzer.py` lacks test coverage. *(Issue #1661)*
 
-### Frontend
+### Code quality
 
-- **No loading/error states on several pages.** The Batch and Analytics pages
-  would benefit from skeleton loaders and user-friendly error messages.
-- **No dark mode.** Tailwind is configured but no dark variant is applied.
-- **Missing `package-lock.json` or `pnpm-lock.yaml`.** The frontend has no
-  lockfile committed, leading to non-reproducible builds.
+- **Scheduler creates its own DatabaseClient.** `scheduler.py` bypasses the
+  application-level pooled client, creating a new connection on every tick.
+  Refactor to use `get_db_client()`. *(Issue #1658)*
 
-### CI/CD
+### API improvements
 
-- **No test stage in the Gitea Actions workflow.** `build.yaml` builds and
-  pushes images but never runs `pytest`. Add a test job that gates the build.
-- **No linting or type checking.** Add `ruff` (Python) and `tsc --noEmit`
-  (TypeScript) to CI.
+- **API pagination.** The `/analyze/batch` and `/jobs` endpoints could benefit
+  from cursor-based pagination for large result sets.
+- **Request validation improvements.** Add stricter input validation for
+  company names (disallow special characters, enforce length limits).
 
 ---
 
@@ -94,23 +139,20 @@ Improvements to usability, performance, and developer experience.
 
 Lower-urgency enhancements and future features.
 
-- **Export analysis reports.** Allow users to download analysis results as PDF
-  or CSV from the dashboard.
-- **Comparison view.** Side-by-side comparison of two companies' patent
-  portfolios.
-- **Scheduled/recurring analysis.** Periodically re-analyze tracked companies
-  and alert on significant changes.
-- **Webhook/notification support.** Send alerts (Slack, Discord, email) when
-  batch jobs complete or when a company's innovation score changes
-  significantly.
-- **Multi-model support.** Let users choose between LLM providers per analysis
-  (e.g., GPT-4o, Gemini, Claude) and compare outputs.
-- **Patent trend charts.** Visualize patent filing frequency and technology
-  category distribution over time in the Analytics page.
-- **API pagination.** The `/analyze/batch` and `/jobs` endpoints could benefit
-  from cursor-based pagination for large result sets.
-- **OpenAPI client generation.** Auto-generate the TypeScript API client from
-  the FastAPI OpenAPI spec to keep frontend types in sync.
+- **Historical analysis diffing.** Show what changed between two analysis runs
+  for the same company, highlighting new patents and score shifts.
+- **Patent classification tagging.** Automatically tag patents by technology
+  domain (AI, semiconductors, materials science) using LLM classification.
+- **User-level API keys.** Allow users to generate personal API keys for
+  programmatic access without JWT token refresh.
+- **Batch export.** Export analysis results for multiple companies at once as
+  a ZIP archive.
+- **Rate limiting dashboard.** Surface rate limit status and usage statistics
+  in the admin panel.
+- **Async webhook delivery.** Move webhook delivery to a background task queue
+  (e.g., Celery, arq) to avoid blocking the scheduler.
+- **Multi-tenant support.** Scope analysis results and tracked companies per
+  user or organization.
 
 ---