RETENTION (Phase 2, priority zero). History starts compounding tonight.
migration 025 model_snapshots — APPLIED to prod. Append-only, one row per
graded prop PER SIDE PER CYCLE, with a unique index on
(snapshot_id, player_key, stat, line, side) so a retried cycle cannot
duplicate. RLS on, service-role writes only.
What it captures that the ledger never did:
- features jsonb — the model's INPUTS. Without these a backtest can only
grade our own homework; with them any future model can be replayed
against the exact conditions this one faced.
- REFUSALS (refused + refusal_reason). The ledger drops them, so a gate
refusing props that would have WON is invisible — unmeasurable lost
edge. Captured via a new onGraded hook in gradeSlateService that fires
with BOTH sides before any filtering.
- grade_11, the pre-collapse grade. The 4-letter map throws away the
entire live C-/C/C+/B- range.
- model_version + code_sha on every row. ledger_entries mixes pre/post-fix
grades with no marker and cannot be separated retroactively.
- p_win / ev_pct / fair_odds / takeable / value — none of which any
permanent store held.
Wiring: analyzeViaEngine1 attaches _features/_grade_11 (underscore =
internal); gradeSlateService fires onGraded then STRIPS them so they never
reach a cache or API payload; snapshotService builds rows and persists
best-effort. Retention reuses the LEDGER's dateET/gameIdFor helpers so
rows share the ledger's natural key exactly — otherwise the settle pass
could never join outcomes onto them. Rows are written BEFORE the empty-
slate early return: a slate that refused everything is exactly the case
worth recording.
CONTRACT HELD: retention is injectable and every path is caught. persist()
returns errors, never throws; a missing Supabase client is SKIPPED, not an
error. A retention failure can never break a snapshot.
BACKUP: backup-db.sh now accepts BACKUP_SSH_KEY as base64 (recommended —
survives env-var newline mangling, which is how injected SSH keys usually
break silently) OR raw PEM, detected by decoding and looking for the PEM
header. Verified both forms detect correctly against a real generated key.
Suite 279/3325 green, build exit 0.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SmNjJAwEnqHPtXbvSZR8kA
builtbykev
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