release: v5.6.0 — steering-model II (Foundation + B + C)

Bundles the v5.6 work already on main into a release:
- Foundation (62d910e): active-config-reader enumerates rules/agents/output
  styles with a loadPattern/survivesCompaction/derivationConfidence triple;
  frontmatter parser reads YAML block sequences.
- B (bb647ce, 778b517): load-pattern accounting — manifest reports
  component-level sources with an always-loaded subtotal; token-hotspots tags
  each hotspot with its load pattern.
- C (e3b044a): new orchestrated OST scanner (CA-OST-001/002/003), scanner
  count 13 -> 14, all claims doc-verified.

Version synced: plugin.json 5.5.0->5.6.0, README version badge +
version-history row, CHANGELOG [5.6.0] section. Frozen v5.0.0 snapshots
preserved via strip-helpers (--json/--raw byte-stable for the original 13
scanners); only SC-5 default-output regenerated. Suite 1023 pass, self-audit
A/A (config 93, plugin 100), readmeCheck passed, mismatches [].

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "config-audit",
   "description": "Multi-agent workflow for analyzing, reporting, and optimizing Claude Code configuration across your entire machine",
-  "version": "5.5.0",
+  "version": "5.6.0",
   "author": {
     "name": "Kjell Tore Guttormsen"
   },