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logpile/docs/bible/10-decisions.md
Mikhail Chusavitin fcd57c1ba9 docs: introduce project Bible and consolidate all architecture documentation
- Create docs/bible/ with 10 structured chapters (overview, architecture,
  API, data models, collectors, parsers, exporters, build, testing, decisions)
- All documentation in English per ADL-007
- Record all existing architectural decisions in docs/bible/10-decisions.md
- Slim README.md to user-facing quick start only
- Replace CLAUDE.md with a single directive to read and follow the Bible
- Remove absorbed files: REANIMATOR_EXPORT.md, docs/INTEGRATION_GUIDE.md,
  and all vendor parser README.md files

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-02-20 14:15:35 +03:00

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# 10 — Architectural Decision Log (ADL)
> **Rule:** Every significant architectural decision **must be recorded here** before or alongside
> the code change. This applies to humans and AI assistants alike.
>
> Format: date · title · context · decision · consequences
---
## ADL-001 — In-memory only state (no database)
**Date:** project start
**Context:** LOGPile is designed as a standalone diagnostic tool, not a persistent service.
**Decision:** All parsed/collected data lives in `Server.result` (in-memory). No database, no files written.
**Consequences:**
- Data is lost on process restart — intentional.
- Simple deployment: single binary, no setup required.
- JSON export is the persistence mechanism for users who want to save results.
---
## ADL-002 — Vendor parser auto-registration via init()
**Date:** project start
**Context:** Need an extensible parser registry without a central factory function.
**Decision:** Each vendor parser registers itself in its package's `init()` function.
`vendors/vendors.go` holds blank imports to trigger registration.
**Consequences:**
- Adding a new parser requires only: implement interface + add one blank import.
- No central list to maintain (other than the import file).
- `go test ./...` will include new parsers automatically.
---
## ADL-003 — Highest-confidence parser wins
**Date:** project start
**Context:** Multiple parsers may partially match an archive (e.g. generic + specific vendor).
**Decision:** Run all parsers' `Detect()`, select the one returning the highest score (0100).
**Consequences:**
- Generic fallback (score 15) only activates when no vendor parser scores higher.
- Parsers must be conservative with high scores (70+) to avoid false positives.
---
## ADL-004 — Canonical hardware.devices as single source of truth
**Date:** v1.5.0
**Context:** UI tabs and Reanimator exporter were reading from different sub-fields of
`AnalysisResult`, causing potential drift.
**Decision:** Introduce `hardware.devices` as the canonical inventory repository.
All UI tabs and all exporters must read exclusively from this repository.
**Consequences:**
- Any UI vs Reanimator discrepancy is classified as a bug, not a "known difference".
- Deduplication logic runs once in the repository builder (serial → bdf → distinct).
- New hardware attributes must be added to canonical schema first, then mapped to consumers.
---
## ADL-005 — No hardcoded PCI model strings; use pci.ids
**Date:** v1.5.0
**Context:** NVIDIA and other vendors release new GPU models frequently; hardcoded maps
required code changes for each new model ID.
**Decision:** Use the `pciutils/pciids` database (git submodule, embedded at build time).
PCI vendor/device ID → human-readable model name via lookup.
**Consequences:**
- New GPU models can be supported by updating `pci.ids` without code changes.
- `make build` auto-syncs `pci.ids` from submodule before compilation.
- External override via `LOGPILE_PCI_IDS_PATH` env var.
---
## ADL-006 — Reanimator export uses canonical hardware.devices (not raw sub-fields)
**Date:** v1.5.0
**Context:** Early Reanimator exporter read from `Hardware.GPUs`, `Hardware.NICs`, etc.
directly, diverging from UI data.
**Decision:** Reanimator exporter must use `hardware.devices` — the same source as the UI.
Exporter groups/filters canonical records by section; does not rebuild from sub-fields.
**Consequences:**
- Guarantees UI and export consistency.
- Exporter code is simpler — mainly a filter+map, not a data reconstruction.
---
## ADL-007 — Documentation language is English
**Date:** 2026-02-20
**Context:** Codebase documentation was mixed Russian/English, reducing clarity for
international contributors and AI assistants.
**Decision:** All documentation in `docs/bible/` and new inline code documentation
must be written in English. Existing Russian-language user-facing README may remain
in Russian but architecture docs migrate to English.
**Consequences:**
- Bible is authoritative in English.
- AI assistants get consistent, unambiguous context.
---
<!-- Add new decisions below this line using the format above -->