168 records -> docs/decisions/records/<area>/<topic>.md (163 active, 23 dirs) and docs/decisions/archive/<area>/<topic>.md (5 archived). The filename IS the key, so one-active-record-per-key becomes a filesystem property rather than a validator check, and supersession becomes a `git mv`. WHY: the monolith was a concurrency problem before an aesthetic one. A 3,900-line append target made parallel sessions collide -- PR #605 and PR #614 both hit append-vs-append conflicts during routine rebases, and hand-resolving those inside the corpus is exactly the operation the rationale-rewrite guard exists to police. HOW IT IS VERIFIED: a ~170-file diff cannot be meaningfully read, so correctness does not rest on reading it. The parser was taught BOTH formats first, so the body-diff guard parses the old form at the merge-base and the new form at head -- the migration validates itself, no bypass. The proof is a field-level equivalence harness: 168 records before and after, zero lost, zero gained, zero field mismatches, zero rationale bodies differing. Reviewers should scrutinise the harness; it is the actual evidence. What measuring caught that reading would not have: - ~500 lines sit OUTSIDE any record -- decisions.md's lifecycle schema and each topic file's preamble, mostly the only copy. Source files are kept and stripped, never deleted. They also cannot be filed per-area: topic files hold several areas and 4 of 23 areas span several files. - Archive discovery was a non-recursive glob; after the split it found ZERO archived records, surfacing as four bogus "supersedes points to unknown key" errors rather than an obvious failure. - ~32 live docs point into the corpus BY DATE, which the split dangles. Each stripped file now ends with a generated "Records formerly in this file" index, which also rescues the identical breadcrumbs in old issue comments. - decisions.md's "In this file:" list was 97 same-file anchor bullets that the split makes WRONG, not merely stale. Dropped; the generated index replaces them with links that resolve. The equivalence harness now runs against a checked-in FIXTURE, not the live corpus. The earlier version migrated the real tree, which made it a one-shot: the moment the migration landed there was nothing left to move and the tests failed for reasons unrelated to the code. A fixture keeps them testing the SCRIPT rather than the repo's current state. Keys preserved verbatim, warts included: `sched` (12) and `scheduling` (1) remain two directories for one concept. Renaming a key is not a move -- it changes identity, breaks the equivalence proof, and invalidates MemPalace's per-key drawers. Taxonomy normalisation is separate work. refs #610
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key, title, status, since, supersedes, superseded-by, rule, signals, mechanics
| key | title | status | since | supersedes | superseded-by | rule | signals | mechanics |
|---|---|---|---|---|---|---|---|---|
| sched.auto-tune-foundation | 2026-07-16 — Auto-tuning enumerates via EF, persists via SmartCollection; additive coexistence (#69) | active | 2026-07-16 | none | none | Auto-tune preview enumeration uses EF distinct+count queries for exact counts, while each created channel is persisted as a live SmartCollection; coexistence with existing channels/numbers is additive-only, never mutating. | auto-tuning, SmartCollection, additive coexistence, channel numbering · paths: `CreateChannelFromLineup` · issues: #69, #63 | `PreviewAutoTuneChannelsHandler`, `AutoTuneAxisMap`, `ISender`-based `CreateChannelFromLineup` primitive |
Auto-tuning (#69) generates channels from library metadata (TV Show / TV Genre / Movie Genre).
Enumeration for the preview uses EF distinct+count queries (exact counts drive the min-items
threshold and preview display); each created channel is backed by a newly-created SmartCollection
(live Lucene query) so channels keep tracking the library as it grows. Query authorship is
server-side only — the client passes {axis, value}, never a Lucene string. Coexistence is additive:
the batch gets a reserved starting channel number (skipping taken numbers), a proposed channel whose
name already exists is flagged and de-selected by default, and existing channels are never mutated.
Bulk create loops the #63 CreateChannelFromLineup primitive via ISender and returns a per-channel
Created/Skipped/Failed outcome. Known MVP limitation: the generated SmartCollection is named after the
channel; a name collision with an existing SmartCollection surfaces as a per-channel Failed outcome.