> For the complete documentation index, see [llms.txt](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/.spec_system/archive/sessions/phase16-session01-guardrails-architecture-parity-baseline/implementation-notes.md). # Implementation Notes **Session ID**: `phase16-session01-guardrails-architecture-parity-baseline` **Started**: 2026-06-02 00:32 **Last Updated**: 2026-06-02 00:51 *** ## Session Progress | Metric | Value | | ------------------- | ------- | | Tasks Completed | 15 / 15 | | Estimated Remaining | 0 hours | | Blockers | 0 | *** ## Session Evidence ### Environment * `analyze-project.sh --json` completed successfully. * `check-prereqs.sh --json --env` passed for `.spec_system/`, `jq`, and `git`. * Project-local tool commands are available through Bun: `bun run vitest --version` reports `vitest/4.1.6`, and `bun run tsc --version` reports `Version 6.0.3`. * The optional global tool probe reports no global `vitest` or `tsc`; this is not a session blocker because `package.json` scripts resolve repo-local dependencies through Bun. * No dev server is required for this artifact-only baseline session. ### Architecture Decision * Decision: port v2.3 Hermes features into existing AI OS modules, not by copying the v2.3 monolith. * Source of truth: Phase 16 PRD `Core Decision (Architecture)`. * Target shape: * Keep `/agents/hermes` as an AI OS route. * Keep `src/routes/agents.hermes.tsx` delegating to `HermesReadOnlyPage`. * Decompose v2.3 features into `src/components/hermes/` modules. * Route client data through `useHermes`, `useHermesAdmin`, `hermes-types.ts`, `hermes-admin-types.ts`, and `hermes-demo-data.ts`. * Extend `scripts/lib/hermes-dev-bridge.ts` for reads and `scripts/lib/hermes-admin-bridge.ts` for writes. * Non-goal: file parity with the v2.3 `agents.hermes.tsx` monolith. * Product identity stays AI OS with Hermes as a local-agent surface; do not rebrand the host back to Claude OS. * ADR context: `docs/adr/0001-extension-platform-foundation.md` supports static, typed, locally trusted extension boundaries over dynamic or remote code loading. The Hermes port follows the same preference for explicit module boundaries and local trust controls. ### IA Decision * Decision: keep the existing `Tabs` shell on `/agents/hermes`. * Add planned top-level tabs for v2.3 surfaces: * `Chat` * `Mission` * `Documents` * `Mnemosyne` * `Connections` * Keep the existing top-level tabs until the owning implementation sessions replace or expand them: * `Sessions` * `Memory` * `Pantheon` * `Skills` * `Admin` * Rejected IA options: * Nested sub-tabs, because the new surfaces have different write gates, modes, and validation needs. * One long-scroll page, because it would regress the current dense, scannable local-agent surface and make state boundaries harder to test. * Insertion anchors in the current page: * `TabsList` starts at `src/components/hermes/hermes-read-only-page.tsx:150`. * Current `TabsTrigger` entries are `sessions`, `memory`, `pantheon`, `skills`, and `admin` at lines 155-174. * Current `TabsContent` blocks are at lines 177-191. ### Source Roots * V23 source root is readable: `/home/aiwithapex/projects/claudeos/claude-os-v2.3/`. * Diff reference root is readable: `/home/aiwithapex/projects/claudeos/diff-v1-v2.3/`. * Confirmed source inventory anchors: * `V23/src/routes/agents.hermes.tsx` - 7364 lines. * `V23/vite.config.ts` - 3298 lines. * `V23/src/components/hermes-mission-control.tsx` - 2365 lines. * `V23/src/components/hermes-mnemosyne.tsx` - 1104 lines. * `V23/src/components/hermes-documents-gallery.tsx` - 2158 lines. * `V23/src/components/hermes-status-pill.tsx` - 91 lines. * Confirmed diff files include `SUMMARY.md`, `full.diff`, `changed-text.txt`, `added-text.txt`, `changed-files.txt`, and `added-in-v2.3.txt`. ### Current AI OS Baseline * Route: * `src/routes/agents.hermes.tsx` is a 16-line route wrapper. * It delegates rendering to `HermesReadOnlyPage`. * Route metadata describes Hermes as read-only local telemetry for status, sessions, memory, personas, and skills. * Page: * `src/components/hermes/hermes-read-only-page.tsx` is 213 lines. * Header presents `Hermes host cockpit` with mode, token, and sensitive-read status tiles. * `HermesStatusBar` renders status and model telemetry before the tab shell. * The current tab shell has five tabs: `Sessions`, `Memory`, `Pantheon`, `Skills`, and `Admin`. * Footer records that bridge reads stay local/loopback/token-gated and that chat/persona writes require local admin mode, the per-run token, and loopback access. * Planned insertion points: * New `TabsTrigger` entries belong beside the existing trigger list inside the same `TabsList`. * New `TabsContent` blocks belong beside the existing content blocks. * Planned top-level values are `chat`, `mission`, `documents`, `mnemosyne`, and `connections`. * Production source status: * No production source code was changed for this snapshot. ### Baseline Tests * Focused Session 01 baseline test files: * `src/components/hermes/__tests__/hermes-sections.test.tsx` - component states for Sessions, Memory, Pantheon, Skills, Status, and Admin controls. * `src/lib/__tests__/hermes-admin-types.test.ts` - admin response parsers, bridge error parsing, SSE chat event parsing, and malformed payload errors. * `scripts/lib/__tests__/hermes-dev-bridge.test.ts` - registered read endpoints, loopback checks, sensitive token checks, bounded sessions, memory sanitization, skills, and Pantheon summaries. * `scripts/lib/__tests__/hermes-admin-bridge.test.ts` - admin status, disabled gate, loopback and token rejection, malformed body handling, persona write flows, chat spawn/SSE behavior, timeout, and disconnect cleanup. * Related Hermes tests discovered but outside the focused Session 01 command: * `src/hooks/__tests__/use-hermes.test.tsx` * `src/hooks/__tests__/use-hermes-admin.test.tsx` * `scripts/lib/__tests__/hermes-scanner.test.ts` * `tests/e2e/hermes-agent.spec.ts` * Existing live-data validation coverage includes Hermes snapshot validation in `src/lib/__tests__/nested-validation.test.ts` and broad live-data fallback coverage in `src/lib/__tests__/validate-live-data.test.ts`. ### Extension Points * Dev bridge reads: * `scripts/lib/hermes-dev-bridge.ts` * `ENDPOINTS` starts at line 241. * Current read endpoints: `/__hermes_status`, `/__hermes_models`, `/__hermes_skills`, `/__hermes_sessions`, `/__hermes_session`, `/__hermes_memory`, and `/__hermes_pantheon`. * Register function: `registerHermesDevBridge` at line 964. * Admin bridge writes: * `scripts/lib/hermes-admin-bridge.ts` * `ENDPOINTS` starts at line 217. * Current admin/write endpoints: `/__hermes_admin_status`, `POST /__hermes_chat`, `POST /__hermes_pantheon/validate`, `POST /__hermes_pantheon/install`, `POST /__hermes_pantheon/create`, and `PUT/DELETE /__hermes_pantheon/`. * Register function: `registerHermesAdminBridge` at line 926. * Vite wiring: * `vite.config.ts` imports `registerHermesAdminBridge` and `registerHermesDevBridge` at lines 11-12. * `registerHermesDevBridge` is wired in `configureServer` at line 379. * `registerHermesAdminBridge` is wired in `configureServer` at line 390. * `isLoopback` is defined at line 57. * `/__token` is served at line 670. * Client read hook: * `src/hooks/use-hermes.ts` * Query keys start at line 25. * Current live queries cover status, models, token, sessions, memory, Pantheon, and skills. * Client admin hook: * `src/hooks/use-hermes-admin.ts` * Admin query keys start at line 29. * Current mutations cover chat, persona validation, default install, create, update, and delete. * The hook guards duplicate persona actions through `personaInFlightRef` and duplicate chat sends through `chatInFlightRef`. * Type parsers: * `src/lib/hermes-types.ts` for read response contracts. * `src/lib/hermes-admin-types.ts` for admin status, chat events, persona payloads, write responses, and bridge errors. * Demo fixtures: * `src/lib/hermes-demo-data.ts` currently provides demo status, models, sessions, memory, Pantheon, and skills data. * Session 03 must extend this file for new read domains before UI consumes them. * Tests to extend: * `src/components/hermes/__tests__/hermes-sections.test.tsx` * `src/lib/__tests__/hermes-admin-types.test.ts` * `scripts/lib/__tests__/hermes-dev-bridge.test.ts` * `scripts/lib/__tests__/hermes-admin-bridge.test.ts` * Related hook tests under `src/hooks/__tests__/` when new hook state is added. ### Endpoint Parity * Current read endpoints in `scripts/lib/hermes-dev-bridge.ts`: * `/__hermes_status` - done. * `/__hermes_models` - done. * `/__hermes_skills` - done, sensitive. * `/__hermes_sessions` - done, sensitive. * `/__hermes_session` - done, sensitive. * `/__hermes_memory` - done, sensitive. * `/__hermes_pantheon` - done, sensitive. * Missing Phase 16 read endpoints from the PRD: * `/__hermes_connections` * `/__hermes_profiles` * `/__hermes_pantheon_templates` * `/__hermes_missions` GET * `/__hermes_documents` GET/file/trash * Current admin/write endpoints in `scripts/lib/hermes-admin-bridge.ts`: * `/__hermes_admin_status` - done, AI OS-only admin gate. * `POST /__hermes_chat` - done. * `POST /__hermes_pantheon/validate` - done. * `POST /__hermes_pantheon/install` - done. * `POST /__hermes_pantheon/create` - done. * `PUT/DELETE /__hermes_pantheon/` - done. * Missing Phase 16 write endpoints from the PRD: * `POST /__hermes_image_upload` * `POST /__hermes_missions/create` * `POST /__hermes_missions/optimize` * `POST /__hermes_missions/tick` * `POST /__hermes_missions/clear` * `POST /__hermes_pantheon_sync` * `DELETE /__hermes_documents?name=` * `POST /__hermes_documents/restore` * `DELETE /__hermes_documents/trash` * `POST /__hermes_obsidian` * Write inventory count: * Already ported: 6 of 16 writes. * Remaining: 10 writes. * `PUT /__hermes_session` from the v2.3 note is resolved as persona edit through `PUT /__hermes_pantheon/`; no separate session-write endpoint should be added from that anchor. ### Write-Safety Guardrails * Loopback: * `vite.config.ts:57` defines `isLoopback` for `127.0.0.1`, `::1`, and `::ffff:127.0.0.1`. * Dev bridge and admin bridge tests reject non-loopback requests. * Per-run token: * `vite.config.ts:42` creates `REFRESH_TOKEN` with `randomBytes(32)`. * `vite.config.ts:49` writes the token file with mode `0600`. * `vite.config.ts:670` serves `/__token` loopback-only. * `useHermesAdmin` sends `X-Claude-OS-Token` for admin mutations. * Admin mode: * `scripts/lib/hermes-admin-bridge.ts:18` defines the admin gate `HERMES_DASHBOARD_ADMIN`. * `isHermesAdminEnabled` disables admin writes in production and requires `HERMES_DASHBOARD_ADMIN=1`. * `/__hermes_admin_status` exposes gate state without accepting writes. * Method and token preflight: * `requirePreflight` starts at `scripts/lib/hermes-admin-bridge.ts:291`. * Existing write handlers call it before parsing or mutating state. * Body bounds: * Current admin JSON bodies are capped by `MAX_JSON_BODY_BYTES`. * Persona YAML is capped by `MAX_PERSONA_YAML_BYTES`. * Chat prompt text is capped by `MAX_PROMPT_CHARS`. * New image, document, mission, and sync endpoints must add matching caps before buffering or writing. * Path confinement: * Current persona paths use `resolvePersonaPath`. * The current pattern uses `resolve`, `relative`, and `..` rejection. * Session 02 must generalize this into reusable confinement for missions, documents, uploads, trash IDs, Git sync paths where applicable, and Obsidian vault allow-list paths. * Redaction and error boundaries: * `SECRET_PATTERN` is defined in `hermes-admin-bridge.ts`. * `scanSecrets` warns on suspicious persona content. * `sanitizeText` is used before returning stream chunks and stderr details. * `sendErrorFromException` logs internal errors and returns stable `internal error` responses. * Args-array spawn: * Chat resolves a binary, builds an argv array, and calls `spawnChild` without shell interpolation. * Chat strips inherited Python env keys, enforces a timeout, caps stderr, and kills the child on timeout or disconnect. * Mission optimize and Pantheon GitHub sync must clone this args-array, timeout, bounded-output, and no-shell pattern. * Auditing: * New write endpoints must log endpoint and outcome without payload contents. * No write path may bypass `useHermesAdmin` on the client. ### Session Handoff * Session 02 owns backend endpoint parity and write-safety foundation: * Add five missing read endpoint groups to `hermes-dev-bridge.ts`. * Add ten missing write endpoints to `hermes-admin-bridge.ts`. * Generalize current persona path confinement into reusable `confinePath`. * Add security tests for method, loopback, token, oversized bodies, path traversal, no-shell spawn, timeout, and output bounding where applicable. * Keep `/__hermes_admin_status`; every new write remains behind admin mode. * Session 03 owns data layer and demo fixtures: * Extend `hermes-types.ts` and parser tests for new read shapes. * Extend `hermes-admin-types.ts` and parser tests for new write responses. * Extend `useHermes` query keys and query views. * Extend `useHermesAdmin` mutation surfaces. * Extend `hermes-demo-data.ts` with demo-safe data for every new domain. * Ownership boundaries: * Session 01 changed spec artifacts only and made no production source changes. * Session 02 should not add visual shell, tab UI, or full v2.3 component ports. * Session 03 should not bypass bridge guardrails or invent UI flows before endpoint contracts are stable. * Phases 17-20 own visible UI ports after Phase 16 safety and data contracts are in place. * Risks: * Scope pressure to copy the v2.3 monolith. * Path traversal in documents, uploads, missions, and Obsidian writes. * Command injection in mission optimize and GitHub sync. * Demo/live contract drift. * Heavy Mnemosyne assets or 3D dependencies landing too early. * Prerequisites for the next implementer: * Re-run analyzer and prereq checks. * Read this file before implementing Session 02 or Session 03. * Treat the Phase 16 PRD endpoint table and write-safety contract as the source of truth. * Preserve compatibility names such as `x-claude-os-token`. ### Validation Results * Focused Hermes baseline tests: * Command: `bun run test src/components/hermes/__tests__/hermes-sections.test.tsx src/lib/__tests__/hermes-admin-types.test.ts scripts/lib/__tests__/hermes-dev-bridge.test.ts scripts/lib/__tests__/hermes-admin-bridge.test.ts` * Result: pass. * Test files: 4 passed. * Tests: 67 passed. * Duration: 790ms. * Typechecks: * `bun run typecheck` passed. * `bun run typecheck:scripts` passed. * Whitespace and encoding: * `git diff --check` passed. * ASCII scan found no non-ASCII characters in session `spec.md`, `tasks.md`, or `implementation-notes.md`. * `file` reports all three session artifacts as ASCII text. * Success criteria review: * Architecture decision recorded and references the Phase 16 Core Decision. * IA decision recorded with planned `Chat`, `Mission`, `Documents`, `Mnemosyne`, and `Connections` top-level tabs. * Current five-tab read-only surface snapshotted. * Current Hermes test files and baseline commands recorded. * Bridge, hook, type, admin type, demo-data, and test extension points confirmed. * No production source code changed by this session. * Guardrails for loopback, token, admin mode, path confinement, redaction, args-array spawn, and error boundaries recorded. * AI OS host identity preserved. * Ready for the `validate` workflow step. *** ## Task Log ### 2026-06-02 - Session Start **Environment verified**: * [x] Prerequisites confirmed * [x] Repo-local Bun tooling available * [x] Directory structure ready *** ### Task T001 - Analyzer State And Candidate Order **Started**: 2026-06-02 00:32 **Completed**: 2026-06-02 00:33 **Duration**: 1 minute **Notes**: * Analyzer reports project `AI OS`, `current_phase` 16, and current session `phase16-session01-guardrails-architecture-parity-baseline`. * Phase 15 is reported as `completed`. * Phase 16 candidate order is Session 01 guardrails baseline, Session 02 endpoint/write safety, then Session 03 data layer/demo fixtures. **Files Changed**: * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/tasks.md` * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/implementation-notes.md` **BQC Fixes**: * N/A - artifact-only evidence task. *** ### Task T002 - v2.3 Source And Diff Roots **Started**: 2026-06-02 00:33 **Completed**: 2026-06-02 00:34 **Duration**: 1 minute **Notes**: * Verified that the v2.3 source root and diff reference root are readable. * Confirmed the v2.3 route, Vite handlers, standalone components, and diff artifacts can anchor source inventory. **Files Changed**: * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/tasks.md` * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/implementation-notes.md` **BQC Fixes**: * N/A - artifact-only evidence task. *** ### Task T003 - Focused Baseline Test Inventory **Started**: 2026-06-02 00:34 **Completed**: 2026-06-02 00:36 **Duration**: 2 minutes **Notes**: * Inventoried the four focused baseline test files required by the session spec. * Recorded related hook, scanner, and E2E tests as context only. **Files Changed**: * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/tasks.md` * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/implementation-notes.md` **BQC Fixes**: * N/A - artifact-only evidence task. *** ### Task T004 - Implementation Notes Scaffold **Started**: 2026-06-02 00:36 **Completed**: 2026-06-02 00:37 **Duration**: 1 minute **Notes**: * Created and organized the session evidence artifact. * Added sections for environment, decisions, source roots, parity, extension points, guardrails, handoff, validation, and task logs. **Files Changed**: * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/tasks.md` * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/implementation-notes.md` **BQC Fixes**: * N/A - artifact-only evidence task. *** ### Task T005 - Architecture Decision **Started**: 2026-06-02 00:37 **Completed**: 2026-06-02 00:38 **Duration**: 1 minute **Notes**: * Recorded the Phase 16 Core Decision: feature parity, not file parity. * Captured target AI OS module boundaries and host identity constraints. **Files Changed**: * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/tasks.md` * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/implementation-notes.md` **BQC Fixes**: * N/A - artifact-only evidence task. *** ### Task T006 - IA Decision **Started**: 2026-06-02 00:38 **Completed**: 2026-06-02 00:39 **Duration**: 1 minute **Notes**: * Recorded the decision to keep the Tabs shell and add `Chat`, `Mission`, `Documents`, `Mnemosyne`, and `Connections` as top-level tabs. * Captured current insertion anchors in `hermes-read-only-page.tsx`. **Files Changed**: * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/tasks.md` * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/implementation-notes.md` **BQC Fixes**: * N/A - artifact-only evidence task. *** ### Task T007 - AI OS Extension-Point Map **Started**: 2026-06-02 00:39 **Completed**: 2026-06-02 00:40 **Duration**: 1 minute **Notes**: * Mapped bridge, hook, type, admin type, demo-data, and test extension points. * Confirmed bridge modules are already wired from Vite and should be extended, not inlined into `vite.config.ts`. **Files Changed**: * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/tasks.md` * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/implementation-notes.md` **BQC Fixes**: * N/A - artifact-only evidence task. *** ### Task T008 - Current Five-Tab Surface Snapshot **Started**: 2026-06-02 00:40 **Completed**: 2026-06-02 00:42 **Duration**: 2 minutes **Notes**: * Snapshotted the current route and page shape without changing production source. * Recorded the current five tabs and planned future tab insertion points. **Files Changed**: * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/tasks.md` * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/implementation-notes.md` **BQC Fixes**: * N/A - artifact-only evidence task. *** ### Task T009 - Endpoint Parity Snapshot **Started**: 2026-06-02 00:42 **Completed**: 2026-06-02 00:43 **Duration**: 1 minute **Notes**: * Snapshotted current read and admin/write endpoint coverage. * Recorded missing read groups, missing writes, and the resolved `PUT /__hermes_session` note. **Files Changed**: * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/tasks.md` * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/implementation-notes.md` **BQC Fixes**: * N/A - artifact-only evidence task. *** ### Task T010 - Write-Safety Guardrails **Started**: 2026-06-02 00:43 **Completed**: 2026-06-02 00:44 **Duration**: 1 minute **Notes**: * Recorded guardrails and code anchors for loopback, token, admin mode, body limits, path confinement, redaction, error boundaries, and args-array spawn. * Captured the Obsidian vault allow-list requirement. **Files Changed**: * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/tasks.md` * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/implementation-notes.md` **BQC Fixes**: * N/A - artifact-only evidence task. *** ### Task T011 - Session 02 And Session 03 Handoff **Started**: 2026-06-02 00:44 **Completed**: 2026-06-02 00:45 **Duration**: 1 minute **Notes**: * Recorded prerequisites, risks, and ownership boundaries for Session 02 and Session 03. * Confirmed Session 01 produced only spec-system evidence. **Files Changed**: * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/tasks.md` * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/implementation-notes.md` **BQC Fixes**: * N/A - artifact-only evidence task. *** ### Task T012 - Focused Hermes Baseline Tests **Started**: 2026-06-02 00:46 **Completed**: 2026-06-02 00:47 **Duration**: 1 minute **Notes**: * Ran the focused Hermes baseline test command through `bun run test`. * Result passed with 4 test files and 67 tests. **Files Changed**: * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/tasks.md` * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/implementation-notes.md` **BQC Fixes**: * N/A - artifact-only evidence task. *** ### Task T013 - App And Script Typechecks **Started**: 2026-06-02 00:47 **Completed**: 2026-06-02 00:48 **Duration**: 1 minute **Notes**: * Ran `bun run typecheck`. * Ran `bun run typecheck:scripts`. * Both commands passed with no blockers. **Files Changed**: * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/tasks.md` * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/implementation-notes.md` **BQC Fixes**: * N/A - artifact-only evidence task. *** ### Task T014 - Diff And ASCII Validation **Started**: 2026-06-02 00:48 **Completed**: 2026-06-02 00:49 **Duration**: 1 minute **Notes**: * `git diff --check` passed. * Non-ASCII scan found no matches in session artifacts. * `file` reports session artifacts as ASCII text. **Files Changed**: * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/tasks.md` * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/implementation-notes.md` **BQC Fixes**: * N/A - artifact-only evidence task. *** ### Task T015 - Success Criteria Review **Started**: 2026-06-02 00:49 **Completed**: 2026-06-02 00:51 **Duration**: 2 minutes **Notes**: * Reviewed implementation notes against Session 01 success criteria. * Confirmed no production source changes were needed or made by this session. * Confirmed focused tests, typechecks, diff check, and ASCII validation passed. * Confirmed the session is ready for the `validate` workflow step. **Files Changed**: * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/tasks.md` * `.spec_system/specs/phase16-session01-guardrails-architecture-parity-baseline/implementation-notes.md` **BQC Fixes**: * N/A - artifact-only evidence task. *** ## Design Decisions ### Decision 1: Evidence Artifact Only **Context**: Session 01 establishes a baseline before endpoint, hook, data, or UI implementation begins. **Options Considered**: 1. Change runtime code now - would violate the session scope. 2. Record baseline and handoff evidence only - preserves the required guardrail checkpoint. **Chosen**: Record baseline and handoff evidence only. **Rationale**: Sessions 02 and 03 own implementation. Session 01 must preserve a stable comparison point. *** ## BQC Summary N/A - this session produced spec-system evidence only and did not change application runtime code. --- # 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. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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