chore: release v0.7.6.0 — directives discoverability

[buildingjoshbetter]

Summary

Version bump to 0.7.6.0 and CHANGELOG entry for the directives discoverability release.

Changes in this release

• CLAUDE_TEMPLATE.md Auto-Store section missing directive guidance #563 — Directive guidance in CLAUDE_TEMPLATE.md
• MCP instructions 'Storing memories' section missing directive cross-reference #564 — MCP storing section cross-references directives
• MCP instructions Directives section: limited trigger phrases and no management guidance #565 — Expanded trigger phrases and management guidance
• truememory_forget missing alwaysLoad meta (blocks directive deletion) #566 — truememory_forget alwaysLoad
• No directive count guardrail — unbounded context injection at session start #567 — Closed as wontfix (50 directives = 763 tokens, under threshold)
• No discoverability regression tests for directives #568 — 17 discoverability regression tests