docs/log.md

# Log

Chronological activity log. Append-only. Entry headers use the format `## [YYYY-MM-DD] <op> | <title>` so they can be grepped:

```
grep "^## \[" log.md | tail -10
```

---

## [2026-04-30] note | Wiki bootstrapped

Created CLAUDE.md (schema + workflows), index.md (empty catalog), and this log. Wiki directory structure (wiki/sources, wiki/entities, wiki/concepts, wiki/synthesis) will be created on first ingest.

## [2026-04-30] ingest | gps-tracking-architecture.md + teltonika-ingestion-architecture.md

Ingested both initial architecture docs in one pass. Created:
- Source pages: [[gps-tracking-architecture]], [[teltonika-ingestion-architecture]].
- Entity pages: [[tcp-ingestion]], [[processor]], [[directus]], [[react-spa]], [[redis-streams]], [[postgres-timescaledb]], [[teltonika]].
- Concept pages: [[plane-separation]], [[protocol-adapter]], [[codec-dispatch]], [[position-record]], [[failure-domains]], [[phase-2-commands]].
- Updated index.md with all 15 new pages.

No contradictions to flag — the two docs are coherent (the Teltonika doc explicitly cites and respects the system architecture). Open follow-ups: TRM business domain not yet captured; per-model IO dictionary location TBD; Phase 2 timing unspecified.

## [2026-04-30] ingest | Teltonika Data Sending Protocols (official wiki)

Ingested the canonical Teltonika spec covering all codec families. New additions:
- Source page: [[teltonika-data-sending-protocols]].
- New concept: [[avl-data-format]] — byte-level reference for codecs 8/8E/16, including UDP envelope.

Updates to existing pages (no contradictions; refinements + additions):
- [[teltonika]] — added full codec table with hex IDs, Codec 15 (out of scope), Codec 14 ACK/nACK, packet size limits, UDP support note.
- [[codec-dispatch]] — corrected hex IDs, added directionality table covering codecs 8–15.
- [[position-record]] — concrete priority enum (0/1/2), two's-complement lat/lon note, Speed=0 means GPS invalid, Generation Type and NX section flagged.
- [[phase-2-commands]] — clarified Codec 12 vs 14 selection, added `nack` status for Codec 14 IMEI-mismatch (Type `0x11`); noted 13/15 are not part of the outbound design.

Cleanup: removed stale duplicate concept files from earlier passes (system-planes.md, protocol-adapter-pattern.md, codec-dispatch-registry.md) — superseded by plane-separation.md, protocol-adapter.md, codec-dispatch.md respectively. Fixed dangling [[protocol-adapter-pattern]] link in [[io-element-bag]].

Open questions surfaced by the canonical doc: Codec 16 Generation Type — promote to typed [[position-record]] field? Codec 8E NX values land as `Buffer` in `attributes`; needs explicit fixture coverage. SMS-based protocols (Codec 4 + binary SMS) probably out of scope but worth a deliberate decision.

## [2026-05-01] note | Stream-name canonicalization

Documented the canonical stream/key names in [[redis-streams]] — the wiki was previously silent on the actual `telemetry:teltonika` name, so anyone reading it had no way to find out what stream the services use. Added a "Stream and key naming" table covering the inbound telemetry stream, Phase 2 command streams, and registry/heartbeat keys. Also added the naming convention (`telemetry:{vendor}`) so future adapters fit predictably. Cross-referenced the actual stream name in [[processor]] and [[tcp-ingestion]] entities so each entity is self-contained but the convention has one canonical home.

Triggered by a stage-side bug where tcp-ingestion's compiled default (`telemetry:teltonika`) and processor's compiled default (`telemetry:t`) had drifted; pipeline ran with both services talking past each other for ~7 hours before symptoms surfaced. Fix landed in deploy stack (shared env var) and processor (default realigned). Wiki update closes the documentation loop.

## [2026-05-01] synthesis | Live channel architecture (corrects a wiki claim)

Researched Directus's WebSocket subscription mechanism via context7. Confirmed that subscriptions only fire for writes that go through Directus's `ItemsService` (REST/GraphQL/Admin UI mutations, not direct database INSERTs). The previous claim in [[directus]] — "When Processor writes a row, Directus broadcasts the change to subscribed clients" — was wrong.

Wrote [[live-channel-architecture]] documenting the corrected design: two WebSocket channels, each in its own plane. Processor exposes its own WebSocket endpoint for high-volume telemetry fan-out (auth via Directus-issued JWT, authorization delegated to Directus once at subscribe time). Directus's built-in WebSocket subscriptions cover business-plane events. Reasoning: preserves [[plane-separation]] and gives the gentlest failure mode (Directus down blocks only new authorizations, not the live firehose).

Updated [[processor]] (added Live broadcast section, multi-instance consumer-group plumbing note), [[directus]] (corrected the real-time-delivery section), and index.md.

## [2026-05-01] synthesis | Directus schema — working draft

Captured the business-plane schema agreement reached during today's discussion as [[directus-schema-draft]]. Marked as a working draft, open for revision.

Shape: pseudo multi-tenant under `organizations`; users / teams / vehicles / devices are all m2m with orgs (durable catalog); events scoped to a single org; `entries` is the per-event timing unit with nullable `vehicle_id` (foot races) and nullable `team_id` (lone racers); `entry_crew` and `entry_devices` are junctions off entries (no separate `crews` collection — teams already provide durable group identity). Vehicle ownership intentionally soft (`owner_user_id?`, `owner_team_id?`), not enforced. Per-event `classes`. `events.discipline` drives validation. Per-org-per-user role lives on `organization_users.role`.

Open: `entries.status` enum, permission policy definitions per role, stages/timing records (Phase 2 processor), geofences (Phase 2 processor).

## [2026-05-01] synthesis | Schema draft — course definition + penalty system

Major expansion of [[directus-schema-draft]]. Added course definition (stages → segments → geofences/waypoints/SLZs) and the full penalty system. Vehicle ownership idea dropped (org-level only, no owner FKs). `entries.status` enum pinned with semantics. Permission policies confirmed as Directus 11 dynamic-filter Policies, one per logical role.

**Penalty system landed as: numbers in DB, math in code.** A `penalty_formulas` collection holds all values (bracket multipliers, per-miss penalties); the [[processor]] holds one evaluator per `type` in a registry. Speed limit penalties are progressive slice-by-slice (income-tax math, confirmed against the Tirana 24h rulebook): each bracket contributes only the portion of the peak overspeed within its range — `slice × rate` summed across all brackets the peak crossed. Worked example with peak=58 included in the doc.

**Retroactive flag** lives on `penalty_formulas` (default `true`) and on `geofences` / `speed_limit_zones` (default `false`). Per-edit override at save time. Formula recomputes are cheap (snapshotted inputs on `entry_penalties` rows). Geometry recomputes are expensive (replay from positions hypertable) and deferred to Phase 2.5 of [[processor]].

**Other decisions:** checkpoints are typed geofences with `manual_verification=true`, not a separate collection. Stages are containers; segments (`liaison` / `special-stage` / `parc-ferme`) are the atomic rule unit. SLZs carry an `evaluation_window_meters` so the 2km rule from real federations is data, not code.

Per-entry timing layer (`entry_segment_starts`, `entry_crossings`, `entry_penalties`) and results layer (`stage_results`) are the [[processor]] Phase 2 write target. Schema is laid out so Phase 1 (positions only) can ship without it.

## [2026-05-01] note | Faulty position flagging

Added a `faulty boolean DEFAULT false` column to the positions hypertable, controlled by track operators through [[directus]] (the hypertable is exposed as a Directus collection for read+update). [[processor]] filters `WHERE faulty = false` on every read of position data — peak-speed, crossing detection, replay-based recompute. Flagging triggers a windowed recompute of affected `entry_penalties`. Updated [[postgres-timescaledb]], [[position-record]] (storage shape vs. wire shape), [[processor]] (faulty position handling), and [[directus-schema-draft]] (cross-plane operator workflow + third recompute kind).

## [2026-05-01] synthesis | Schema draft — start-order strategies + secondary observations

Read two real-world rulebooks to pin the start-order question: Tirana 24h 2017 (static every leg) and Rally Albania 2025 (dynamic, several variants). Rally Albania's §5.5–5.10 settle it — start order is per-stage, declarative, and rule-driven. Stage 1 bikes invert the top 20 of the prologue; stages 2 onward seed from previous-stage **clean** SS time (penalties explicitly excluded); epilogue inverts overall standings; intervals are decided per stage.

Updates to [[directus-schema-draft]]:
- `stages` gains `role` (prologue/regular/epilogue), `start_interval_seconds`, `start_order_strategy`, `start_order_strategy_params`, `start_order_input_stage_id`.
- New "Start order strategies" subsection enumerating `manual` / `previous_stage_result` / `previous_stage_clean_result` / `inverse_top_n_then_natural` / `inverse_of_overall` with real-world mappings. Tirana 24h covered by `manual`; Rally Albania covered by the other four.
- `entry_segment_starts` adds `start_position` and `manual_override` (latter for late-arrival reseeding by Race Marshals — both rulebooks leave that operator-driven).
- Materialization is per-category (categories share grids independently per Rally Albania §2.8 + §5.10).
- Decisions list grows: stage roles, CP-missing vs CP-late-past-closing as distinct event types sharing a formula row, reverse-stage tiebreaker.
- Open questions shrink: dropped the start-interval question (now pinned) and the permission-policy-filters question (admin/deployment task, not architectural).

## [2026-05-01] ingest | Rally Albania 2025 — Race Rules and Regulations

Formal ingest of `raw/Regulations_2025.pdf` (Motorsport Club Albania, October 2024). Created [[rally-albania-regulations-2025]] as the canonical real-world reference for federation rule shapes — classes, start-order rules, penalty taxonomy, tracking requirements, timekeeping, protests. Section numbers preserved as `§X.Y` so the schema draft and future SPA work can cite precisely.

Wired the source into [[directus-schema-draft]] (added to `sources:` frontmatter; framing note near the top; inline citation at start-order strategies section). Most of the schema-relevant content was already absorbed into the draft during the prior synthesis step — this ingest formalizes the citation chain.

Open follow-ups flagged on the source page: §12.11 SLZ formula lives in the Supplementary Regulations (not the general regs), so we shouldn't hardcode a default; M-7 numbering bug (Veteran and Female driver share the code — likely a typo); neutralization zones (§8.12) not yet modeled in the schema.

Index updated: new source row. No new entity/concept pages created — the doc supports existing pages rather than introducing new domain objects.