fix: align resolution parameter, defer realtime, and prepare 0.1.0 release

[christopherjnelson]

Summary

This PR addresses pre-release blockers and final release-readiness cleanup for the 0.1.0 initial release:

1. Parameter Alignment (resolution vs grain)

• Renamed query parameter and node control from grain to resolution across analytics.getOverview, analytics.getTimeseries, and revenue.getTimeseries per the Open Analytics public API contract.
• Enforced supported resolutions:
  • analytics.getOverview: hour, day
  • analytics.getTimeseries: hour, day, week
  • revenue.getTimeseries: hour, day only (removed unsupported week and month)

2. Defer Realtime Resource from v0.1

• Upstream documents POST /v1/read/realtime/token as requiring OAuth credentials only, whereas the node uses Bearer API Read Key authentication.
• Removed realtime resource from the node for v0.1 to maintain 100% auth coherence across site, analytics, and revenue.

3. Documentation & Changelog

• Replaced template-maintenance history in CHANGELOG.md with clean 0.1.0 release notes.
• Updated docs/api-matrix.md and README.md to reflect resolution parameters and the removal of realtime.
• Added the manual live qualification matrix and cross-cutting test dimensions to docs/testing.md.

4. Verification

• 32 unit/contract tests passing across 5 suites.
• All 10 verification gates passed cleanly:
  • npm run format:check
  • npm run lint (0 errors / 0 warnings)
  • npm run typecheck
  • npm test
  • npm run build
  • npm run scan:source
  • npm run release:check
  • npm run package:check
  • npm run smoke:load
  • npm run smoke:install