> 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/phase01-session06-llm-fallback-and-scan-privacy/tasks.md).

# Task Checklist

**Session ID**: `phase01-session06-llm-fallback-and-scan-privacy` **Total Tasks**: 22 **Estimated Duration**: 3-4 hours **Created**: 2026-05-29

***

## Legend

* `[x]` = Completed
* `[ ]` = Pending
* `[P]` = Parallelizable (can run with other \[P] tasks)
* `[SNNMM]` = Session reference (NN=phase number, MM=session number)
* `TNNN` = Task ID

***

## Progress Summary

| Category       | Total  | Done   | Remaining |
| -------------- | ------ | ------ | --------- |
| Setup          | 3      | 3      | 0         |
| Foundation     | 6      | 6      | 0         |
| Implementation | 9      | 9      | 0         |
| Testing        | 4      | 4      | 0         |
| **Total**      | **22** | **22** | **0**     |

***

## Setup (3 tasks)

Initial analysis and baseline confirmation.

* [x] T001 \[S0106] Verify Session 05 completion, server LLM docs, and current route validation baseline (`.spec_system/specs/phase01-session05-websocket-hydration-and-archive-export-privacy/validation.md`)
* [x] T002 \[S0106] Map LLM fallback, provider-transfer, scan, and memory privacy expectations into implementation notes (`.spec_system/specs/phase01-session06-llm-fallback-and-scan-privacy/implementation-notes.md`)
* [x] T003 \[S0106] Identify focused server verification commands before code changes (`.spec_system/specs/phase01-session06-llm-fallback-and-scan-privacy/implementation-notes.md`)

***

## Foundation (6 tasks)

Core validation, privacy, and provider-transfer helpers.

### apps/server

* [x] T004 \[S0106] \[P] Create LLM request validation helper with schema-validated input and compact no-echo errors (`apps/server/src/lib/llmRequestValidation.ts`)
* [x] T005 \[S0106] \[P] Create LLM privacy helper for provider-transfer state, approved scan roots, and deterministic text redaction (`apps/server/src/lib/llmPrivacy.ts`)
* [x] T006 \[S0106] Add explicit provider-transfer opt-in and timeout fallback to LLM client with redacted provider-bound call inputs (`apps/server/src/lib/llmClient.ts`)
* [x] T007 \[S0106] Sanitize on-demand analysis prompt inputs and returned issue fields while preserving deterministic fallback parsing (`apps/server/src/llm/engines/onDemandAnalysis.ts`)
* [x] T008 \[S0106] Sanitize plan, idle suggestion, and transcript-miner provider-bound inputs without changing local response contracts (`apps/server/src/llm/engines/planDecomposer.ts`, `apps/server/src/llm/engines/idleSuggestionEngine.ts`, `apps/server/src/llm/engines/transcriptMiner.ts`)
* [x] T009 \[S0106] Redact memory finding route output while preserving type filtering and stable response shape (`apps/server/src/routes/llm.ts`)

***

## Implementation (9 tasks)

Main route hardening and documentation updates.

### apps/server

* [x] T010 \[S0106] Validate `/llm/plan` bodies through shared LLM request validation with bounded prompt and conventions fields (`apps/server/src/routes/llm.ts`)
* [x] T011 \[S0106] Validate `/llm/analyze` file arrays with caps, malformed-entry rejection, and bounded anti-patterns (`apps/server/src/routes/llm.ts`)
* [x] T012 \[S0106] Validate `/llm/scan-codebase` root, limit, extensions, and anti-pattern options with approved-root enforcement (`apps/server/src/routes/llm.ts`)
* [x] T013 \[S0106] Redact scan progress events, scan metadata, and walker failure paths without echoing absolute roots or raw filesystem errors (`apps/server/src/routes/llm.ts`)
* [x] T014 \[S0106] Validate `/llm/idle-suggestion` bodies with bounded hero/task/activity fields and deterministic fallback behavior (`apps/server/src/routes/llm.ts`)
* [x] T015 \[S0106] Add provider privacy headers to LLM and memory routes without requiring provider configuration (`apps/server/src/routes/llm.ts`)
* [x] T016 \[S0106] Update server README with fallback, provider opt-in, scan allowlist, and memory retention behavior (`apps/server/README_server.md`)
* [x] T017 \[S0106] Update API docs for hardened LLM routes, provider-transfer status, scan roots, and retained gaps (`docs/api/README_api.md`, `docs/api/event-api-hook-contracts.md`)
* [x] T018 \[S0106] Update privacy docs for LLM provider transfer, scan content handling, memory exposure, and retained erasure limitations (`docs/privacy-and-security.md`)

***

## Testing (4 tasks)

Focused verification and contract coverage.

### apps/server

* [x] T019 \[S0106] \[P] Extend LLM route tests for no-key fallback, compact validation errors, provider-key-blocked behavior, scan allowlists, redacted scan output, and redacted memory output (`apps/server/tests/llm.test.ts`)
* [x] T020 \[S0106] \[P] Extend codebase walker tests for ignored historical directories, symlink avoidance, file caps, and truncation behavior (`apps/server/tests/codebaseWalker.test.ts`)
* [x] T021 \[S0106] Run focused server tests, server typecheck, Biome checks, ASCII validation, LF validation, and record results (`.spec_system/specs/phase01-session06-llm-fallback-and-scan-privacy/implementation-notes.md`)
* [x] T022 \[S0106] Run full workspace quality/test gates that are practical locally and record pass/fail evidence (`.spec_system/specs/phase01-session06-llm-fallback-and-scan-privacy/implementation-notes.md`)

***

## Completion Checklist

Before marking session complete:

* [x] All tasks marked `[x]`
* [x] All tests passing
* [x] All files ASCII-encoded
* [x] implementation-notes.md updated
* [x] Ready for the validate workflow step

***

## Next Steps

Run the implement workflow step to verify session completeness.


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