fix(codex): calibrate Business Premium display capacity - #7444

Summary

• Fixes [Bug]: Business Premium seat plan self_serve_business_prolite is counted at baseline capacity weight 1 instead of 5 #7440: Business Premium plan self_serve_business_prolite currently falls through to baseline capacity weight 1 and stays uncalibrated. Add its documented five-Standard-seat estimate to the existing display-only map. Two Premium seats plus one Team seat now contribute 11 weekly units instead of 3.
• Reuse codexPlanKey normalization and the existing per-window aggregator. Keep unknown plans conservative, preserve exclusion/freshness controls, and never invent a missing five-hour window. No account selection, routing, authentication, quota limit or GUI controls change.
• Update the owning inventory contract and public provider guide. Primary calibration evidence checked 2026-10-20: Business limits and Business overview. The exact observed plan string comes from [Bug]: Business Premium seat plan self_serve_business_prolite is counted at baseline capacity weight 1 instead of 5 #7440; the numerical estimate is not a measured token entitlement.

Verification

• Independent Bun 1.4.3 regression, bun test tests/providers/provider-capacity.test.ts: before implementation 18 pass / 1 fail; after implementation 19 pass / 0 fail. The added case checks two Premium labels (including case/space normalization), Team weighting, weighted weekly consumption, calibrated coverage and absence of fabricated burst windows. Existing unknown-plan, stale, pause/reauth, mixed-window and prototype-key negatives remain green.
• bun scripts/structure-ssot.ts, bun scripts/privacy-scan.ts, and git diff --check pass. Ordinary privacy checks are allowed; no Codex Security scan was invoked.
• bun node_modules/typescript/bin/tsc --noEmit reached the finite 300-second local limit and was terminated. Typecheck is unverified locally, not passed. The full suite is disproportionate for this four-file calibration on the shared host; focused behavior is verified and current-head hosted CI remains required.
• Each local workload runs alone under hard CPU/RAM/swap/process/time limits and fresh private homes; the production configuration and live services are untouched. Root dependency map/lock matches the existing frozen install. No paid upstream calls, live account mutation, sync/restart or runtime installation occurred.
• The isolated documentation frozen install completed with lifecycle scripts disabled. Local docs build rendered the static site/assets but reached the same finite 300-second limit during Pagefind indexing; it is not a successful local docs build. The unchanged candidate's current-head hosted docs site build job passes.
• Current-head hosted gates passes, including Typecheck and Privacy scan; docs site build, structure, catalog, hygiene, target and Docker checks pass. All four selected Ubuntu shards and the aggregate ci now pass in current-head run 39421778705. macOS/Windows remain unselected. Keep Draft pending independent review. This PR is not a merge, deployment or release.

Checklist

• Scope stays focused and avoids unrelated cleanup.
• Docs or release notes were updated when needed.
• Security-sensitive changes were reviewed for secrets, auth, and unsafe defaults (no credential/destination/auth boundary is changed).