Windows Update activity during Autopilot OOBE/ESP is a blind spot no other tool
(Intune console included) surfaces well — a cumulative update installing mid-OOBE
can break enrollment (r/Intune KB5095189). This makes it visible with secured
evidence.
Agent (net48):
- WindowsUpdateTracker + WindowsUpdateWatcherHost: watch
Microsoft-Windows-WindowsUpdateClient/Operational (EventIDs 19/20/43/44 =
success/failure/install-started/download-started), startup backfill (OOBE updates
run before the agent starts), RecordId watermark dedup (restart boundary vs
intra-run seen-set so a high-id live event can't hide older backfill events),
HRESULT->symbol decode. Emits windows_update_succeeded/_failed/_started with the
real event Timestamp. Default-on config knobs; uncertain EventIDs configurable
without redeploy.
- RegistryCollector: emitOnlyIfExists (suppress positive-assertion events when the
key is absent) + Registry64 base view by default (bitness-independent, matches
TenantIdResolver) with optional registryView override.
Rules:
- ANALYZE-DEV-004 (high: WU failed during enrollment, high-insight not KO) +
ANALYZE-DEV-005 (info: WU installed). reboot_pending corroboration matches
event_data exists==true.
- GATHER-DEVICE-005 -> windows_update_reboot_pending (emitOnlyIfExists),
GATHER-DEVICE-004 -> windows_update_history (Get-HotFix, opt-in).
- 5 EventTypes synced across Constants + MCP resource-catalog + web eventTypes.
Self-maintaining rule lifecycle (analyze + gather parity):
- Gather rules gain the sunset/orphan-GC that only analyze had
(ProcessSunsetGatherRuleAsync + runtime filter + seed/reseed/github paths).
- RuleProvenance field (embedded/github, null=embedded back-compat): the embedded
catalog only sunsets its own rules; GitHub-reseeded rules ahead of the deployed
binary (new ids AND content updates to existing ids) are exempt and reclaimed to
embedded once the binary catches up. No orphans, no operator knowledge required.
Verified: full solution builds; backend suite 2770 pass, agent suite 1638 pass;
rules AJV-valid + combined.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
## Rules as GitHub single source of truth
- Add 75 individual JSON rule files (2 gather, 18 analyze, 55 IME patterns)
under rules/gather/, rules/analyze/, rules/ime-log-patterns/
- Add JSON Schemas for all three rule types with VS Code IntelliSense support
- Add CI combine script (rules/scripts/combine.js) + GitHub Action that
validates schemas with ajv-cli and generates rules/dist/ combined files
- Convert BuiltIn*.cs from hardcoded C# objects to embedded JSON resource loaders
- Add GitHubRuleRepository service to fetch dist/ files from raw.githubusercontent.com
- Add ReseedFromGitHubFunction: POST /api/rules/reseed-from-github?type=all|gather|analyze|ime
## IME Log Patterns
- Extend ImeLogPattern model with Description and IsBuiltIn properties
- Add ImeLogPatterns table + API constants
- Add TableStorageService CRUD methods for IME log patterns
- Add ImeLogPatternService (CRUD, merge, auto-seed from embedded JSON)
- Add ImeLogPatternsFunction: GET/PUT /api/rules/ime-log-patterns (Phase 1: read-only
for tenants, Galactic Admin can enable/disable/edit globally)
- Add IME Log Patterns management page (/ime-log-patterns)
- Wire GetAgentConfigFunction to use ImeLogPatternService instead of static class
## API route consolidation
- All rule endpoints now under /api/rules/* for single certificate exclusion path:
/api/rules/gather, /api/rules/analyze, /api/rules/ime-log-patterns,
/api/rules/reseed-from-github
## Export buttons
- Add per-rule and export-all JSON download buttons to gather-rules,
analyze-rules, and ime-log-patterns pages
## Admin configuration
- Replace old individual reseed buttons with unified "Fetch & Reseed from GitHub"
(calls new GitHub endpoint) plus compact individual-type reseed buttons
- Add CDN cache hint: GitHub raw.githubusercontent.com caches up to 5 minutes
## Preview mode
- ?preview=1 URL param seeds localStorage.previewMode (persists across navigation)
- ?preview=0 clears it; toggle in Navbar settings dropdown (indigo, eye icon)
- IME Log Patterns nav link gated behind galacticAdminMode OR previewMode
- Preview badge shown on nav link when active for normal users
## Tests
- Add xUnit test project (net8.0) with 5 tests for embedded resource loading,
known IME actions validation, and valid categories check
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Oliver Kieselbach