chore: release Forge v0.29.6

[Codename-11]

Summary

• bump Forge from v0.29.5 to v0.29.6
• add curated release notes for AXI-143 issue-local attention and human-readable operational context
• record exact-head GitHub CI as the normal release authority

Included implementation

• PR feat: surface issue context in attention flows #85 — AXI-143 issue-local action responses and issue-title context

Validation

• implementation PR feat: surface issue context in attention flows #85 passed exact-head CI: lint/typecheck/unit and both Playwright shards
• pnpm vitest run tests/unit/changelog-parser.test.ts tests/unit/build-info.test.ts — 4/4 passed
• this release PR must pass exact-head GitHub CI before merge and tagging

Implements AXI-144. Releases the AXI-143 implementation.