[F2-EPIC-155] Tier-2 provider expansion and roadmap continuation

[duksh]

Execution Metadata

• Issue ID: F2-EPIC-155
• Phase: P13
• Type: EPIC
• Owner Team: platform-core
• Priority: P1
• Status (initial): Todo
• Depends On: F2-EPIC-145

Acceptance Criteria

Tier-2 providers and next roadmap themes are planned and started

Artifact Paths

• docs/provider-sdk-integration-strategy.md

Quality Gates

• contract-drift
• security-sbom

Labels (from registry)

epic,expansion

Source Registry

• docs/roadmap/ficecal-v2-task-issue-registry.csv
• docs/roadmap/ficecal-v2-execution-plan-updated.md
• docs/roadmap/ficecal-v2-recovery-index.md