Align the architecture docs with the current repo:
- Boundary matrix: feature may depend on core, feature, tooling — a
feature may import another feature's public exports. overview.md,
dependency-flow.md, and vertical-feature-spec.md all said the stale
`feature -> core, tooling`.
- Optional-core lists completed with core-analytics, core-consent,
core-dsr; tooling list completed with core-testing.
- Package count corrected to the accurate 19-package breakdown.
- BindContext table gained analytics, consentFactory, rateLimit.
Deeper drift (the HTML explainers, vertical-feature-spec §5/§9.5/§11)
is tracked in the local .tmp/ working note, not yet addressed.
Danijel Martinek
b455ae8018