> For the complete documentation index, see [llms.txt](https://faction-os.gitbook.io/faction-os-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://faction-os.gitbook.io/faction-os-docs/.spec_system/archive/sessions/phase07-session02-hosted-configuration-and-client-exposure-boundaries/implementation_summary.md). # Implementation Summary **Session ID**: `phase07-session02-hosted-configuration-and-client-exposure-boundaries` **Package**: Cross-cutting (`apps/server`, `apps/web`, `packages/protocol`; docs and env examples) **Completed**: 2026-05-30 **Duration**: 0.4 hours *** ## Overview Completed the Phase 07 hosted configuration and client exposure boundary session. The work introduced shared hosted-config vocabulary in `packages/protocol`, a redacted server posture builder and diagnostics route, browser-safe public config helpers, and source-backed docs/env alignment for public-client, server-only secret, deploy-only, reserved, and blocked values. The session preserved local-first behavior. Core server and web workflows still work when hosted-service variables are absent, blank, malformed, or reserved. No hosted auth, hosted storage, analytics capture, push delivery, remote access, or public replay hosting was enabled. *** ## Deliverables ### Files Created | File | Purpose | Lines | | --------------------------------------------------- | ---------------------------------------------------------------------------------------------------------- | ----- | | `packages/protocol/src/hostedConfig.ts` | Shared hosted config categories, metadata, and helper contracts | n/a | | `packages/protocol/tests/hostedConfig.test.ts` | Protocol coverage for hosted config metadata and blocked exposure | n/a | | `apps/server/src/lib/hostedConfig.ts` | Server posture builder for redacted hosted config diagnostics | n/a | | `apps/server/tests/hostedConfig.test.ts` | Server posture coverage for absent, blank, public-client, secret, deploy-only, reserved, and unsafe values | n/a | | `apps/server/tests/hostedConfigDiagnostics.test.ts` | Diagnostics route coverage for auth inheritance, redaction, and bounded JSON shape | n/a | | `apps/web/src/lib/hostedConfig.ts` | Browser helper for public `VITE_` config with local-only fallback | n/a | | `apps/web/tests/hostedConfig.test.ts` | Browser helper coverage for valid public config and unsafe mirror rejection | n/a | ### Files Modified | File | Changes | | ------------------------------------------- | ------------------------------------------------------------------------------------------------------ | | `.spec_system/state.json` | Marked Session 02 complete, cleared `current_session`, and appended completion history. | | `.spec_system/PRD/phase_07/PRD_phase_07.md` | Marked Session 02 complete, updated progress to 2/7, and added Session 02 outputs. | | `.spec_system/PRD/PRD.md` | Updated Phase 07 status to in progress and reflected Session 02 completion in phase-level status maps. | | `package.json` | Bumped the root patch version from `0.1.64` to `0.1.65`. | | `.env.local.example` | Clarified hosted variable categories and browser-safe boundaries. | | `apps/server/.env.example` | Clarified server-side hosted config posture. | | `apps/server/README_server.md` | Documented safe hosted diagnostics and raw-value exclusion. | | `apps/server/src/routes/diagnostics.ts` | Wired hosted config diagnostics into the local diagnostics route. | | `apps/server/src/server.ts` | Passed hosted diagnostics dependencies through server creation. | | `apps/warroom/README_warroom.md` | Clarified Worker URL/public config boundary and deploy-only credential separation. | | `apps/web/README_web.md` | Documented browser-visible config limits and local-only fallback. | | `apps/web/src/lib/warRoomDiagnostics.ts` | Routed Worker URL handling through the shared browser config helper. | | `docs/api/README_api.md` | Documented local hosted config diagnostics and route separation. | | `docs/deployment.md` | Clarified deploy-only Cloudflare values and local development posture. | | `docs/environments.md` | Documented source-backed hosted config categories and browser limits. | | `docs/hosted-services.md` | Added Session 02 hosted-config boundary guidance. | | `docs/privacy-and-security.md` | Added hosted config diagnostics privacy guarantees and blocked exposure rules. | | `docs/release.md` | Added hosted config boundary checks to future Phase 07 release notes. | | `packages/protocol/README_protocol.md` | Documented protocol ownership of hosted config vocabulary and diagnostics shapes. | | `packages/protocol/src/index.ts` | Exported hosted config contracts from the protocol barrel. | *** ## Technical Decisions 1. **Protocol owns the vocabulary**: The hosted config categories, exposure statuses, docs paths, and metadata live in `packages/protocol` so server and web code share one contract. 2. **Diagnostics stay redacted**: Server posture reporting returns compact status labels and counts only, never raw environment values. 3. **Browser config stays publishable-only**: The web helper accepts only documented `VITE_` values and falls back to local-only behavior for blank, malformed, reserved, or credential-bearing inputs. *** ## Test Results | Metric | Value | | -------- | ------------ | | Tests | 2113 | | Passed | 2112 | | Failed | 0 | | Coverage | Not reported | Validation result: PASS. *** ## Lessons Learned 1. Hosted config boundaries are easiest to keep honest when the shared vocabulary is centralized before any package-specific parsing logic exists. 2. Diagnostics are safest when they describe posture, not values. *** ## Future Considerations Items for future sessions: 1. Implement hosted identity and authorization guardrails in Session 03. 2. Keep hosted persistence, analytics, push, remote access, and trusted erasure deferred until their dedicated sessions land. *** ## Session Statistics * **Tasks**: 22 completed * **Files Created**: 7 * **Files Modified**: 16 * **Tests Added**: 3 focused test files * **Blockers**: 0 resolved --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. 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