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docs: update session state for Interface+Registry completion
- Updated CLAUDE.md with completed refactoring status - Fixed merge conflicts in SESSION.md and TODO.md - Added blog draft for Interface+Registry pattern
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CLAUDE.md

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- When WireMock restarts on different ports between tests, cached URLs become stale causing "Connection refused"
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- **Fix:** Added `clearOIDCProviderMetadataCache()` method to clear memoization between tests
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- Call in test's `@BeforeEach` when using WireMock with dynamic ports
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### Architecture: Core/QBit Boundaries (Interface + Registry Pattern)
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**Pattern:** Core defines interfaces; QBits provide implementations. Never invert this.
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**Implementation (PR #381 - COMPLETE):**
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- `QSessionStoreProviderInterface` defined in qqq-backend-core
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- `QSessionStoreRegistry` singleton for implementations to register themselves
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- QBit calls `QSessionStoreRegistry.getInstance().register(provider)` on startup
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- Core uses `QSessionStoreRegistry.getInstance().getProvider()` with graceful fallback
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**Why NOT reflection:**
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- Core should NEVER know about specific qbits, even reflectively
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- Reflection is brittle, lacks compile-time safety, hard to refactor
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- Interface + Registry maintains proper dependency direction
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**Remote store optimization:**
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- `loadAndTouchSession()` combines load + TTL reset in single round-trip
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- Redis uses GETEX command; TableBased uses single transaction
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- Interface provides default implementation; providers override with optimized versions
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**Key files:**
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- `QSessionStoreProviderInterface.java` - Core interface
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- `QSessionStoreRegistry.java` - Singleton registry
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- `QSessionStoreHelper.java` - Uses registry, graceful fallback
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- Blog post: https://github.com/orgs/QRun-IO/discussions/382

docs/SESSION-STATE.md

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# Session State
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Last updated: 2026-01-23
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Last updated: 2026-01-25
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## Current Branch
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`feature/session-store-integration`
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`develop`
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## Active Work
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### QSessionStore QBit Integration (PR #381)
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**Status:** Complete - CI passing, awaiting review
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### Interface + Registry Refactoring (PR #381)
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**Status:** COMPLETE - Both CI pipelines passing
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**What was done:**
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- Added `QSessionStoreHelper.java` - reflection-based bridge to optional `qbit-session-store` QBit
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- Added `sessionStoreEnabled` field to `QAuthenticationMetaData` (default: false)
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- Added `clearOIDCProviderMetadataCache()` to `OAuth2AuthenticationModule` for test stability
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- Created `QSessionStoreHelperTest.java` - tests behavior when QBit is NOT on classpath
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- Updated `OAuth2AuthenticationModuleIntegrationTest` to clear OIDC cache in @BeforeEach
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- Addressed Darin's PR review feedback: "Core should never know about qbits"
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- Refactored from reflection to proper Interface + Registry pattern
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- Created `QSessionStoreProviderInterface` and `QSessionStoreRegistry` in core
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- qbit-session-store now extends core interface and registers on startup
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- Added `loadAndTouchSession()` combined operation (reduces remote round-trips)
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**Key learnings:**
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- Static memoization (`oidcProviderMetadataMemoization`) causes test pollution when WireMock ports change
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- Reflection pattern allows optional dependency without compile-time coupling
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**Architecture pattern established:**
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- Core defines interfaces; qbits provide implementations
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- Qbits register themselves with core on startup
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- Core accesses via registry with graceful fallback
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**Related repos:**
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- `qbit-session-store` - Separate repo with InMemory, TableBased, Redis providers
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**Commits:**
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- QQQ: `48c72a2e2`, `205cd5808`
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- qbit-session-store: `3574a52`
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## Open PRs
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| PR | Branch | Description | Status |
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|----|--------|-------------|--------|
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| #381 | feature/session-store-integration | QSessionStore QBit integration | CI passing |
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| #381 | feature/session-store-integration | Interface+Registry refactoring | Review addressed |
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| #373 | - | OAuth2 customizer tokens, scopes API | Awaiting review |
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| #356 | - | Pluggable audit handler system | Awaiting review |
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2. Read `docs/TODO.md` for pending tasks
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3. Resume work
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## Files Modified This Session
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## Key Files Modified
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- `qqq-backend-core/.../modules/authentication/QSessionStoreHelper.java` (new)
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- `qqq-backend-core/.../modules/authentication/QSessionStoreHelperTest.java` (new)
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- `qqq-backend-core/.../model/metadata/authentication/QAuthenticationMetaData.java` (modified)
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- `qqq-backend-core/.../modules/authentication/implementations/OAuth2AuthenticationModule.java` (modified)
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- `qqq-backend-core/.../modules/authentication/implementations/OAuth2AuthenticationModuleIntegrationTest.java` (modified)
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**qqq-backend-core:**
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- `QSessionStoreProviderInterface.java` (new)
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- `QSessionStoreRegistry.java` (new)
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- `QSessionStoreHelper.java` (refactored)
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- `QSessionStoreHelperTest.java` (updated)
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- `OAuth2AuthenticationModule.java` (updated)
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**qbit-session-store:**
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- `QSessionStoreProviderInterface.java` (extends core)
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- `QSessionStoreQBitProducer.java` (registers with core)
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- All providers (added `getDefaultTtl()`, `loadAndTouch()`)

docs/SESSION.md

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# Session State
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<<<<<<< HEAD
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**Last Updated:** 2026-01-18
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**Branch:** `feature/oauth2-pass-tokens-to-customizer`
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**PR:** #373 - https://github.com/QRun-IO/qqq/pull/373
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**Status:** Ready for review/merge
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## Current Context
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All three OAuth2 issues (#372, #374, #375) implemented and pushed. PR updated with full scope.
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## Completed This Session
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### Issue #372: Pass accessToken and idToken to customizer
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- Extract ID token from OIDC response in `createSessionFromTokenRequest()`
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- Refactored `createSessionFromToken()` with overload accepting optional tokens
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- Build context map with `accessToken` and `idToken` when available
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- Tests: `testAccessTokenAndIdTokenPassedToCustomizer()`, `testTokensNotPassedOnSessionResume()`
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### Issue #374: Expose OAuth2 scopes in API
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- Added `OAuth2Values` inner class to `AuthenticationMetaDataResponseV1`
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- Exposes `scopes` field from `OAuth2AuthenticationMetaData`
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### Issue #375: Logout endpoint and session identity validation
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- Added `logout()` default method to `QAuthenticationModuleInterface`
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- Implemented `logout()` in `OAuth2AuthenticationModule` (deletes session, clears cache)
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- Created `/api/v1/logout` endpoint (LogoutSpecV1, LogoutExecutor, etc.)
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- Added identity validation on session resume (token identity must match stored userId)
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- Fixed: prefer OIDC `sub` over `email` for user identity (guaranteed unique)
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### Code Quality Fixes
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- Documented `qInstance` param in logout() interface method
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- Added `@Override` to `LogoutSpecV1.isSecured()`
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=======
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**Last Updated:** 2026-01-14
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**Last Updated:** 2026-01-25
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**Branch:** `develop`
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**Last Task:** SpotBugs + PMD Static Analysis - COMPLETE
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**Status:** Interface + Registry refactoring COMPLETE
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## Current Context
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SpotBugs and PMD static analysis fully implemented and merged to develop. The `qqq-orb@0.6.0` has been published with the `static_analysis` job.
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PR #381 review feedback addressed. Refactored `QSessionStoreHelper` from reflection-based approach to proper Interface + Registry pattern following QQQ architecture principles.
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## Completed This Session
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1. **Maven Plugin Configuration** - Added SpotBugs and PMD plugins to parent pom.xml
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- SpotBugs 4.8.6.6 with FindSecBugs plugin
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- PMD 7.9.0 with custom ruleset
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- Report-only by default
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2. **Configuration Files Created**
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- `spotbugs/exclude-filter.xml` - Exclusions for QQQ patterns
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- `pmd/ruleset.xml` - Custom ruleset tuned for QQQ conventions
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### Interface + Registry Refactoring (PR #381 Review)
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- [x] Created `QSessionStoreProviderInterface` in qqq-backend-core
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- [x] Created `QSessionStoreRegistry` singleton for provider registration
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- [x] Refactored `QSessionStoreHelper` to use registry (removed reflection)
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- [x] Added `loadAndTouchSession()` combined operation
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- [x] Updated `OAuth2AuthenticationModule` to use combined method
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- [x] Updated tests with registry-based approach
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- [x] qbit-session-store: extended core interface, added registration
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- [x] All providers: added `getDefaultTtl()` and optimized `loadAndTouch()`
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- [x] Both CI pipelines passing (QQQ #3103, qbit #4)
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- [x] Posted blog draft to GitHub discussions #382
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- [x] Replied to Darin's PR comments
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- [x] Updated ~/.ai/3-rules.md with architecture learnings
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3. **QQQ-Orb @0.6.0 Published**
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- `src/jobs/static_analysis.yml` - Combined analysis job
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- `src/scripts/mvn_install_for_analysis.sh` - Build step for multi-module deps
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- Fixed dependency resolution by using `mvn install -DskipTests`
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## Commits
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4. **CI Integration** - Static analysis runs in parallel with tests on feature branches
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**QQQ:**
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- `48c72a2e2` - refactor(auth): replace reflection with interface+registry pattern
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- `205cd5808` - fix: add missing Javadoc to test tearDown method
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5. **PR #369 Merged** - feat(ci): add SpotBugs and PMD static analysis
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**qbit-session-store:**
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- `3574a52` - feat: integrate with core QSessionStoreRegistry
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6. **SpotBugs Analysis Run** - Generated `spotbugs-summary.csv` with breakdown:
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- 70 High severity issues
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- 1,556 Medium severity issues
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- Top issues: EI_EXPOSE_REP (554), CT_CONSTRUCTOR_THROW (52), SE_BAD_FIELD (45)
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>>>>>>> 402b56dbe (docs: update session state and add SpotBugs summary)
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## Key Files
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## Files Modified
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<<<<<<< HEAD
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**qqq-backend-core:**
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- `QAuthenticationModuleInterface.java` - added `logout()` default method
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- `OAuth2AuthenticationModule.java` - tokens to customizer, logout impl, identity validation
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- `OAuth2AuthenticationModuleTest.java` - tests for all new functionality
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**qqq-middleware-javalin:**
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- `AuthenticationMetaDataResponseV1.java` - OAuth2Values with scopes
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- `MiddlewareVersionV1.java` - registered logout endpoint
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- `LogoutSpecV1.java` (new) - endpoint spec
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- `LogoutExecutor.java` (new) - executor
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- `LogoutInput.java` (new) - input class
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- `LogoutOutputInterface.java` (new) - output interface
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- `LogoutResponseV1.java` (new) - response class
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=======
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### QQQ Repo (merged to develop)
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- `pom.xml` - SpotBugs and PMD plugin configurations
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- `spotbugs/exclude-filter.xml` - Exclusion rules
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- `pmd/ruleset.xml` - Custom PMD ruleset
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- `.circleci/config.yml` - Uses qqq-orb@0.6.0, static_analysis in parallel
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- `spotbugs-summary.csv` - Full breakdown of SpotBugs findings
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### QQQ-Orb Repo (published as @0.6.0)
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- `src/jobs/static_analysis.yml`
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- `src/scripts/mvn_install_for_analysis.sh`
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- `src/scripts/mvn_spotbugs.sh`
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- `src/scripts/mvn_pmd.sh`
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- `src/scripts/collect_static_analysis_reports.sh`
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>>>>>>> 402b56dbe (docs: update session state and add SpotBugs summary)
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**qqq-openapi:**
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- `SchemaBuilderTest.java` - updated OneOf count
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## Key Design Decisions
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- **100% backwards compatible** - existing customizers and frontends unchanged
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- **Null-safe** - tokens only in context when available (initial auth vs session resume)
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- **Identity validation** - defense-in-depth; token identity must match stored userId
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- **sub over email** - OIDC `sub` is guaranteed unique per issuer; email can change
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## Commits on Branch
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<<<<<<< HEAD
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1. `b02c37a55` - feat(oauth2): pass accessToken and idToken to customizer context
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2. `ad3f17285` - feat(oauth2): expose scopes in authentication metadata API response
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3. `3c9ec59ce` - feat(oauth2): add logout endpoint and session identity validation
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4. `bf2d83acf` - fix: address code quality recommendations
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## To Continue
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Say **"continue from last session"** to resume. PR #373 is ready for review.
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=======
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# View SpotBugs GUI
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mvn spotbugs:gui -pl qqq-backend-core
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```
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## Next Steps (Future Sessions)
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1. **Address High-Priority SpotBugs Findings**
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- `HARD_CODE_PASSWORD` (1) - Find and remove
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- `SQL_INJECTION_JDBC` (13) - Verify parameterized queries
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- `ST_WRITE_TO_STATIC_FROM_INSTANCE_METHOD` (23) - Fix concurrency issues
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2. **Easy Wins**
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- `DLS_DEAD_LOCAL_STORE` (17) - Remove dead assignments
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- `WMI_WRONG_MAP_ITERATOR` (14) - Use entrySet()
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3. **Tune Exclusions**
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- Review false positives and add to exclude-filter.xml
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## To Continue
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Say **"continue from last session"** and Claude will:
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1. Read this file and `docs/TODO.md`
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2. Check current branch and git status
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3. Resume from last checkpoint
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>>>>>>> 402b56dbe (docs: update session state and add SpotBugs summary)
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- `QSessionStoreProviderInterface.java` (new) - Core interface
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- `QSessionStoreRegistry.java` (new) - Singleton registry
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- `QSessionStoreHelper.java` - Uses registry, no reflection
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- `QSessionStoreHelperTest.java` - Registry-based tests
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**qbit-session-store:**
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- `QSessionStoreProviderInterface.java` - Extends core interface
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- `QSessionStoreQBitProducer.java` - Registers with core on startup
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- All providers - Added `getDefaultTtl()` and `loadAndTouch()`
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## To Resume
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Say **"continue from last session"** to:
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1. Read this file for context
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2. Read `docs/TODO.md` for pending tasks
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3. Resume work

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