fix(compliance): force live probe for manual agent refresh

[garvitkaushik-123]

Summary

recommend_storyboards/evaluate_agent_quality already probe live (they call into @adcp/sdk directly), but the "Recheck Status" button on the Agents page backs onto POST /api/registry/agents/{url}/refresh → CrawlerService.refreshSingleAgent, which calls the same discoverCapabilities / checkHealth / getStats / getFormatsForAgent helpers used by the periodic crawler.

Each of those helpers only skips its 15-minute in-memory cache when the caller passes saved owner auth. For an agent with no saved credentials (or an admin refreshing someone else's agent), a manual refresh click still read the stale cached snapshot for up to 15 minutes after the agent's own redeploy fix, even though the live endpoint was already returning the correct response.

Fix

• Add an explicit forceRefresh parameter to CapabilityDiscovery.discoverCapabilities, HealthChecker.checkHealth/getStats, and FormatsService.getFormatsForAgent.
• refreshSingleAgent (the function backing "Recheck Status") now passes forceRefresh: true on every call, independent of whether owner auth is available.
• Cache-write behavior is unchanged — a forced refresh still updates the shared cache, so periodic/unauthed reads benefit from the fresh data too.

Scoped to this repo's own caching layer only; no changes to @adcp/sdk or Addie's MCP tools (their conversational probe path already worked, per the reporter's own testing).

Fixes #5777.

Test plan

• npx tsc --noEmit -p server/tsconfig.json
• npx vitest run server/tests/unit/formats.test.ts server/tests/unit/health-fallback.test.ts server/tests/unit/reprobe-unknown-agents.test.ts server/tests/unit/capability-discovery-auth-classification.test.ts (54 passed)
• Added two new unit tests covering default TTL-cache behavior and forceRefresh bypass

[aao-release-bot]

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