Expose the reload decision API in a public package (v2)

[msafwankarim]

Promotes the config, metadata, and annotation-decision types to public packages (pkg/) so a separate Go module can consume them, while keeping the workload-coupled reload engine internal. External consumers can now import the decision logic without pulling in internal/-only types.

What's public now

• pkg/matcher the decision API: Matcher, NewMatcher, MatchInput, MatchResult, ResourceType (+ constants). Depends only on pkg/config; imports nothing from internal/.
• pkg/config: configuration types (Config, annotations, validation, selectors).
• pkg/metadata: build/deployment metadata + ConfigMap publisher.

Notes:

• The public package is named matcher (not reload) to avoid a package-name collision with the internal engine no import aliases needed anywhere.
• pkg/config and pkg/metadata do import internal/pkg/workload for an implementation-detail constant/helper, but never expose internal types in their signatures, so they remain usable externally.

[github-actions]

✅ Load Test Results (quick)

✅ Load Test Results: ALL TESTS PASSED

🚀 Quick Test (S1, S4, S6) — Use /loadtest for full suite

3/3 passed (100%)

	Scenario	Description	Actions	Errors
✅	S1	S1: 143 burst updates, each triggers 1 dep...	142/143	0
✅	S4	S4: 143 no-op updates, all should be skipped	0	0
✅	S6	S6: Restart test - 142 updates during restart	142	0

📦 Download detailed results

---

Artifacts: Download

[github-actions]

✅ Load Test Results (quick)

✅ Load Test Results: ALL TESTS PASSED

🚀 Quick Test (S1, S4, S6) — Use /loadtest for full suite

3/3 passed (100%)

	Scenario	Description	Actions	Errors
✅	S1	S1: 143 burst updates, each triggers 1 dep...	143/143	0
✅	S4	S4: 143 no-op updates, all should be skipped	0	0
✅	S6	S6: Restart test - 142 updates during restart	136	0

📦 Download detailed results

---

Artifacts: Download