The performance fixture the plan asks for found a real defect on its first run:
evaluation was quadratic in state size. Both the snapshot and its fingerprint
were rebuilt for every target, so each of 5,000 evaluations walked every report
and every mute list. A 5,000-target pass took ~47 seconds.
- the runtime memoizes the materialized snapshot and its fingerprint until a
store reports a change
- evaluateMany computes the fingerprint once and shares it across the batch
- decisions are cached per (profile, target); report and mute changes
invalidate only the targets they touch, while administrative, trust, policy,
and viewer changes drop the whole cache
- cached decisions are deeply frozen, since the cache hands the same object to
every caller
Same pass now takes ~85ms cold, ~6ms warm.
Adds tests/performance (5,000 targets, 500 authors, 100 muters per author) and
tests/security (one case per enumerated requirement testable at this layer).
605 tests; lint, typecheck, and the declaration build pass from a cold checkout.
The evaluator was a skeleton with invented thresholds (5/3/10/5) and two
unimplemented branches. Rebuild it against the migration plan's spec and the
behavior characterized from the pinned reference commit.
Core:
- four independent decision dimensions (ranking, visibility, interaction,
transaction) with severity ladders and max-merge composition
- stable reason identifiers replacing free-text strings
- structured evidence, redacted unless a profile opts in
- administrative-state reduction with capability filtering at merge time, so
revoking a role drops that actor's entries immediately
- protected actors stripped from every denial set
- snapshot fingerprints for cache invalidation
- generic policy engine: applications supply profiles and category thresholds;
the core carries none of its own
Characterization:
- 34 generated fixtures covering every behavior the plan's Phase 0 requires
- conformance suite that actually evaluates them, replacing a placeholder that
asserted a list's length
- reference thresholds (3/3/20/5, 60-day mute window) live in bitvid-compat as
an application profile, not as engine defaults
Fixes found while building:
- reduceAdminState accepted malformed target identifiers, because getTargetKey
formats anything it is given
- community-user-deny fired for any contributor rather than only for
community-curated sources
273 tests pass; typecheck and the reference-import guard are clean.
thePR0M3TH3AN