diff --git a/docs/progress/00-STATUS.md b/docs/progress/00-STATUS.md index 426c5ae..5a982b6 100644 --- a/docs/progress/00-STATUS.md +++ b/docs/progress/00-STATUS.md @@ -2,7 +2,7 @@ **Purpose:** Single source of truth for current project status, phase completion, blockers, and next actions. **Owner:** Development Team -**Last Updated:** 2025-12-22 (P2.3 complete) +**Last Updated:** 2025-12-22 (P2.3 + P1.5b complete, P3 design created) **Status:** active **Baseline Tag:** `v1.0.11-p2.3-complete` @@ -79,7 +79,8 @@ None currently. ## Next Actions (Max 5) -1. **Review and plan next phase** - All P2.x work complete, ready for next milestone +1. **Review P3 Design** - `docs/progress/P3-DESIGN.md` created, awaiting approval +2. **Begin P3.1** - Performance optimization & metrics (after P3 design approval) --- @@ -136,9 +137,10 @@ See [04-PARITY-MATRIX.md](./04-PARITY-MATRIX.md) for detailed parity tracking. **Git Hook:** Pre-push hook available at `githooks/pre-push` (setup: `git config core.hooksPath githooks`). Calls `./ci/run.sh`. -**Baseline Tag:** `v1.0.11-p2.3-complete` — This tag represents P2.x completion (schema versioning + combined resilience tests + Android parity). Use as rollback anchor or reference point for future work. +**Baseline Tag:** `v1.0.11-p2.3-p1.5b-complete` — This tag represents P2.x completion + test harness cleanup (schema versioning + combined resilience tests + Android parity + test harness separation). Use as rollback anchor or reference point for future work. **Previous Baselines:** +- `v1.0.11-p2.3-complete` — P2.3 milestone (Android parity achieved) - `v1.0.11-p2-complete` — P2.x milestone (schema versioning + iOS combined tests) - `v1.0.11-p0-p1.4-p1.5-p2.6-p2.7-complete` — Foundation + type safety milestone - `v1.0.11-p0-p1.4-complete` — Foundation milestone (P0 publish safety, P1.4 core module, P1.5 docs consolidation) diff --git a/docs/progress/P3-DESIGN.md b/docs/progress/P3-DESIGN.md new file mode 100644 index 0000000..89a3599 --- /dev/null +++ b/docs/progress/P3-DESIGN.md @@ -0,0 +1,402 @@ +# P3 Design: Performance, Observability & Developer Experience + +**Purpose:** Defines scope, boundaries, and acceptance criteria for P3 work before implementation begins. +**Owner:** Development Team +**Last Updated:** 2025-12-22 +**Status:** design-only (no implementation) +**Baseline:** `v1.0.11-p2.3-p1.5b-complete` + +--- + +## Purpose + +This document defines the **scope, boundaries, and acceptance criteria** for P3 work **before any implementation begins**. It ensures P3: + +- Does not violate established invariants +- Has clear "done" criteria +- Can be executed incrementally +- Maintains the stability achieved in P0/P1/P2 +- Focuses on polish, performance, and developer experience + +--- + +## P3 Scope Definition + +### What P3 Includes + +**P3.1 — Performance Optimization & Metrics** +- Add performance metrics collection (timing, memory, database operations) +- Optimize critical paths (scheduling, recovery, database queries) +- Document performance characteristics and benchmarks +- Add performance regression tests + +**P3.2 — Enhanced Observability** +- Expand event logging coverage (missing edge cases) +- Add structured metrics export (for dashboards/monitoring) +- Improve error context (stack traces, state snapshots) +- Add diagnostic mode for troubleshooting + +**P3.3 — Developer Experience Improvements** +- Improve error messages (actionable, context-rich) +- Add development mode helpers (debug logging, state inspection) +- Enhance TypeScript types (better IntelliSense, stricter contracts) +- Add integration examples and quick-start guides + +**P3.4 — Documentation Polish** +- API documentation improvements (JSDoc completeness) +- Add troubleshooting guides (common issues, solutions) +- Improve onboarding documentation (getting started, architecture overview) +- Add migration guides (version upgrades, breaking changes) + +### What P3 Excludes + +- **No new features** — P3 is polish, not expansion +- **No architectural changes** — Core structure remains unchanged +- **No breaking API changes** — Backward compatibility required +- **No new platforms** — Focus on existing iOS/Android/Web +- **No new dependencies** — Minimize external additions (prefer built-in solutions) + +--- + +## Invariants That Must Not Be Violated + +All invariants from P0/P1/P2 remain in force: + +1. **Packaging Invariants (P0)** — No forbidden files, exports correct +2. **Core Module Purity (P1.4)** — No platform imports in `src/core/` +3. **CI Authority (P0)** — `./ci/run.sh` remains authoritative +4. **Export Correctness (P0)** — All exports match artifacts +5. **Documentation Structure (P1.5)** — Index-first rule followed +6. **Baseline Tag Integrity** — Tags represent known-good states + +**Enforcement:** All P3 work must pass `./ci/run.sh` before merging. + +--- + +## P3 Work Items + +### P3.1: Performance Optimization & Metrics + +**Goal:** Measure, optimize, and document performance characteristics. + +**Current State:** +- No explicit performance metrics collection +- No performance regression tests +- Performance characteristics undocumented + +**Scope:** +- Add timing metrics for critical operations: + - Schedule creation/update + - Notification delivery + - Recovery operations + - Database queries +- Add memory usage tracking (optional, platform-specific) +- Optimize identified bottlenecks: + - Database query patterns + - Notification scheduling overhead + - Recovery path efficiency +- Document performance characteristics: + - Expected operation times + - Memory footprint + - Platform-specific considerations +- Add performance regression tests: + - Baseline metrics collection + - CI integration (warn on regressions) + +**Constraints:** +- Must not add significant overhead (metrics collection must be lightweight) +- Must be opt-in or development-only (production impact minimal) +- Must not break existing functionality +- Must be cross-platform compatible + +**Acceptance Criteria:** +- [ ] Performance metrics collection implemented (timing, optional memory) +- [ ] Critical paths optimized (at least 2 identified bottlenecks addressed) +- [ ] Performance characteristics documented (expected times, memory footprint) +- [ ] Performance regression tests added (baseline + CI integration) +- [ ] No performance regressions introduced (verified via tests) + +**Estimated Effort:** Medium (2-3 days) + +--- + +### P3.2: Enhanced Observability + +**Goal:** Improve visibility into plugin behavior for debugging and monitoring. + +**Current State:** +- Event logging exists but may have gaps +- No structured metrics export +- Error context could be richer +- No diagnostic mode + +**Scope:** +- Expand event logging coverage: + - Missing edge cases (if any) + - Background task execution + - Recovery operations + - State transitions +- Add structured metrics export: + - JSON export of metrics + - Integration with monitoring systems (optional) + - Historical metrics (if storage available) +- Improve error context: + - Stack traces (where available) + - State snapshots (relevant context) + - Operation context (what was happening) +- Add diagnostic mode: + - Verbose logging toggle + - State inspection helpers + - Debug information export + +**Constraints:** +- Must not expose sensitive data (user content, tokens) +- Must be opt-in (diagnostic mode) +- Must not impact production performance +- Must be cross-platform compatible + +**Acceptance Criteria:** +- [ ] Event logging coverage expanded (all critical paths covered) +- [ ] Structured metrics export implemented (JSON format) +- [ ] Error context improved (stack traces, state snapshots) +- [ ] Diagnostic mode added (verbose logging, state inspection) +- [ ] Documentation updated (how to use observability features) + +**Estimated Effort:** Medium (2-3 days) + +--- + +### P3.3: Developer Experience Improvements + +**Goal:** Make the plugin easier to use, debug, and integrate. + +**Current State:** +- Error messages could be more actionable +- TypeScript types are good but could be stricter +- Limited development helpers +- Integration examples exist but could be expanded + +**Scope:** +- Improve error messages: + - Actionable guidance (what to do next) + - Context-rich (what went wrong, why) + - Platform-specific hints (iOS vs Android differences) +- Add development mode helpers: + - Debug logging toggle + - State inspection methods + - Test data injection helpers +- Enhance TypeScript types: + - Stricter contracts (discriminated unions where appropriate) + - Better IntelliSense (JSDoc improvements) + - Type guards for runtime validation +- Add integration examples: + - Quick-start guide (minimal working example) + - Common patterns (scheduling, recovery, error handling) + - Platform-specific examples (iOS, Android, Web) + +**Constraints:** +- Must maintain backward compatibility +- Must not add production overhead (development helpers only) +- Must be cross-platform compatible +- Must not break existing integrations + +**Acceptance Criteria:** +- [ ] Error messages improved (actionable, context-rich) +- [ ] Development mode helpers added (debug logging, state inspection) +- [ ] TypeScript types enhanced (stricter contracts, better IntelliSense) +- [ ] Integration examples expanded (quick-start, common patterns) +- [ ] Documentation updated (developer experience improvements) + +**Estimated Effort:** Medium (2-3 days) + +--- + +### P3.4: Documentation Polish + +**Goal:** Improve documentation completeness, clarity, and discoverability. + +**Current State:** +- API documentation exists but may have gaps +- Troubleshooting guides are minimal +- Onboarding documentation could be improved +- Migration guides may be missing + +**Scope:** +- API documentation improvements: + - JSDoc completeness (all public APIs documented) + - Parameter descriptions (types, constraints, examples) + - Return value documentation (types, possible values) + - Error documentation (when errors occur, what they mean) +- Add troubleshooting guides: + - Common issues (with solutions) + - Platform-specific issues (iOS vs Android) + - Debugging steps (how to diagnose problems) + - FAQ (frequently asked questions) +- Improve onboarding documentation: + - Getting started guide (step-by-step) + - Architecture overview (high-level design) + - Key concepts (scheduling, recovery, persistence) + - Integration checklist +- Add migration guides: + - Version upgrade guides (breaking changes) + - API migration (deprecated → new APIs) + - Configuration migration (old → new config) + +**Constraints:** +- Must maintain accuracy (docs must match code) +- Must be discoverable (linked from index) +- Must be maintainable (drift guards, review process) +- Must not duplicate existing content + +**Acceptance Criteria:** +- [ ] API documentation complete (all public APIs have JSDoc) +- [ ] Troubleshooting guides added (common issues, solutions) +- [ ] Onboarding documentation improved (getting started, architecture) +- [ ] Migration guides added (version upgrades, API changes) +- [ ] Documentation index updated (all new docs linked) + +**Estimated Effort:** Medium (2-3 days) + +--- + +## P3 Execution Strategy + +### Phase Ordering + +**Recommended sequence:** + +1. **P3.1 First (Performance)** + - Measure first (add metrics collection) + - Identify bottlenecks + - Optimize critical paths + - Document characteristics + - **Checkpoint:** Run `./ci/run.sh`, update progress docs + +2. **P3.2 Second (Observability)** + - Expand event logging + - Add metrics export + - Improve error context + - Add diagnostic mode + - **Checkpoint:** Run `./ci/run.sh`, update progress docs + +3. **P3.3 Third (Developer Experience)** + - Improve error messages + - Add development helpers + - Enhance TypeScript types + - Expand examples + - **Checkpoint:** Run `./ci/run.sh`, update progress docs + +4. **P3.4 Fourth (Documentation)** + - Complete API docs + - Add troubleshooting guides + - Improve onboarding + - Add migration guides + - **Checkpoint:** Run `./ci/run.sh`, update progress docs + +### Incremental Approach + +- Each P3 item can be completed independently +- No strict dependencies between items +- Each item has its own acceptance criteria +- Can pause/resume at any item boundary + +### Testing Strategy + +- **P3.1:** Performance regression tests required +- **P3.2:** Observability features must be testable +- **P3.3:** Developer helpers must not break existing functionality +- **P3.4:** Documentation review (no code changes, but accuracy checks) + +--- + +## P3 "Done" Criteria + +### Overall P3 Completion + +P3 is complete when: + +1. **All P3 items completed** (P3.1, P3.2, P3.3, P3.4) +2. **All invariants preserved** (verified by CI) +3. **All acceptance criteria met** (per item) +4. **Documentation updated** (progress docs, index, changelog) +5. **Baseline tag created** (if desired: `v1.0.11-p3-complete`) + +### Individual Item Completion + +Each P3 item is complete when: + +- [ ] Acceptance criteria met +- [ ] CI passes (`./ci/run.sh`) +- [ ] No invariant violations +- [ ] Documentation updated (if applicable) +- [ ] Performance tests pass (for P3.1) + +--- + +## Risk Mitigation + +### Performance Overhead + +**Risk:** Metrics collection adds overhead +**Mitigation:** Make metrics opt-in or development-only, use lightweight collection + +### Breaking Changes + +**Risk:** Developer experience improvements break existing code +**Mitigation:** Maintain backward compatibility, add deprecation warnings + +### Documentation Drift + +**Risk:** Documentation becomes outdated +**Mitigation:** Drift guards, review process, link from index + +### Scope Creep + +**Risk:** P3 expands beyond polish into features +**Mitigation:** Strict scope definition, "what P3 excludes" section + +--- + +## Success Metrics + +### Performance (P3.1) + +- Critical operations complete within expected timeframes +- No performance regressions introduced +- Performance characteristics documented + +### Observability (P3.2) + +- All critical paths have event logging +- Error context is actionable +- Diagnostic mode is useful for troubleshooting + +### Developer Experience (P3.3) + +- Error messages are actionable +- TypeScript types provide good IntelliSense +- Integration examples are clear and helpful + +### Documentation (P3.4) + +- All public APIs are documented +- Troubleshooting guides are comprehensive +- Onboarding is smooth for new developers + +--- + +## Next Steps After P3 + +Potential future phases (not in scope for P3): + +- **P4.x:** New features (if needed) +- **P5.x:** Platform expansion (if needed) +- **P6.x:** Major architectural changes (if needed) + +**Decision:** Defer until P3 completion and review. + +--- + +**Last Updated:** 2025-12-22 +**Status:** Design-only (awaiting approval before implementation) +