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# Implementation Summary

**Session ID**: `phase01-session04-server-routes-and-authorization-boundaries` **Package**: Cross-package (`apps/server`, `packages/protocol`) **Completed**: 2026-05-29 **Duration**: 0.4 hours

***

## Overview

Hardened the local server route surface by making unsupported historical routes return deterministic 501 responses, tightening validation on the current high-risk POST and list routes, and adding shared REST contracts for route status and error envelopes. The session also aligned auth-token coverage, expanded route and protocol tests, updated the phase tracker and docs, and aligned the workspace version manifests with the protocol runtime version.

***

## Deliverables

### Files Created

| File                                                                                                        | Purpose                                                                     | Lines |
| ----------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------- | ----- |
| `packages/protocol/src/rest.ts`                                                                             | Shared REST route status, capability, request, and error-envelope contracts | \~120 |
| `packages/protocol/tests/rest.test.ts`                                                                      | Protocol tests for route status vocabulary and REST contract exports        | \~90  |
| `apps/server/src/lib/requestValidation.ts`                                                                  | Server request validation helpers for boundary checks and JSON errors       | \~160 |
| `apps/server/src/lib/unsupportedRoutes.ts`                                                                  | Historical route-family classifier and deterministic 501 response builder   | \~140 |
| `apps/server/tests/authBoundaries.test.ts`                                                                  | Auth-token tests across read, write, and unsupported route families         | \~140 |
| `apps/server/tests/unsupportedRoutes.test.ts`                                                               | Tests for historical route-family 501 payloads and War Room separation      | \~170 |
| `.spec_system/specs/phase01-session04-server-routes-and-authorization-boundaries/IMPLEMENTATION_SUMMARY.md` | Session closure summary                                                     | \~80  |

### Files Modified

| File                                                                                      | Changes                                                                                                            |
| ----------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------ |
| `packages/protocol/src/index.ts`                                                          | Exported REST contracts                                                                                            |
| `apps/server/src/server.ts`                                                               | Wired unsupported-route helper into the catch-all and preserved auth/rate-limit ordering                           |
| `apps/server/src/routes/heroes.ts`                                                        | Validated mission list limits, notice bodies, severity, targets, scroll collect bodies, and War Room stub metadata |
| `apps/server/src/routes/permission.ts`                                                    | Validated IDs and optional booleans for permission and plan approval responses                                     |
| `apps/server/src/routes/event.ts`                                                         | Aligned `/event` invalid-body responses with shared route error conventions where practical                        |
| `apps/server/tests/routes.test.ts`                                                        | Extended route coverage for notice validation, pagination bounds, scroll collect bodies, and stub metadata         |
| `apps/server/tests/permission.test.ts`                                                    | Extended permission and plan approval coverage for malformed IDs, invalid booleans, and duplicate-safe responses   |
| `docs/api/README_api.md`                                                                  | Updated concise route status, auth, validation, and unsupported-route behavior                                     |
| `docs/api/event-api-hook-contracts.md`                                                    | Updated detailed route classification, source traceability, and Phase 01 hardening notes                           |
| `apps/server/README_server.md`                                                            | Aligned server README route notes with validation, auth, and capability behavior                                   |
| `.spec_system/state.json`                                                                 | Marked session complete and advanced session history                                                               |
| `.spec_system/PRD/phase_01/PRD_phase_01.md`                                               | Updated phase progress, completed session tracker, and validation date                                             |
| `.spec_system/specs/phase01-session04-server-routes-and-authorization-boundaries/spec.md` | Marked session spec completed                                                                                      |
| `apps/adapters/package.json`                                                              | Bumped workspace package version                                                                                   |
| `apps/cli/package.json`                                                                   | Bumped workspace package version                                                                                   |
| `apps/hooks/package.json`                                                                 | Bumped workspace package version                                                                                   |
| `apps/server/package.json`                                                                | Bumped workspace package version                                                                                   |
| `apps/warroom/package.json`                                                               | Bumped workspace package version                                                                                   |
| `apps/web/package.json`                                                                   | Bumped workspace package version                                                                                   |
| `packages/protocol/package.json`                                                          | Bumped workspace package version                                                                                   |
| `packages/protocol/src/index.ts`                                                          | Aligned runtime version constant                                                                                   |
| `package.json`                                                                            | Bumped root patch version                                                                                          |
| `package-lock.json`                                                                       | Bumped root lockfile version                                                                                       |

***

## Technical Decisions

1. **Explicit unsupported-route classification**: used a dedicated helper so historical routes return stable 501 capability data instead of looking like accidental 404s.
2. **Boundary validation without new dependencies**: kept request validation in local helpers to avoid introducing a runtime dependency for a small set of route checks.

***

## Test Results

| Metric   | Value   |
| -------- | ------- |
| Tests    | 6 files |
| Passed   | 6 files |
| Coverage | N/A     |

***

## Lessons Learned

1. The current local server boundary is clearer when unsupported historical routes are classified explicitly in the response body.
2. Route-level validation is easiest to keep stable when the error envelope is shared between protocol and server tests.

***

## Future Considerations

Items for future sessions:

1. Continue Phase 01 with WebSocket hydration and archive/export privacy.
2. Keep route docs aligned with any future capability changes so the current server surface stays obvious to operators.

***

## Session Statistics

* **Tasks**: 21 completed
* **Files Created**: 7
* **Files Modified**: 21
* **Tests Added**: 0
* **Blockers**: 0 resolved


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