release: v0.7.0

[robinbraemer]

Summary

Version bump 0.6.0 → 0.7.0 across the workspace + every napi npm package + the SDK.

Highlights since 0.6.0:

• Synchronous `pkg.render` engine plugin (feat(pkg.render): synchronous engine plugin (closes spike-1 #1 for real) #37)
• OCI Akua-package deps (feat(deps): OCI Akua-package deps — accept package.k as KclModule marker #39)
• Budget-cap header (feat(pkg.render): budget-cap header — wall-clock + depth limits #42)
• Structured error codes for plugin failures (feat(render): structured codes for pkg.render cycle + budget rejections #44)
• `examples/11-install-as-package` worked demo (example: 11-install-as-package — pkg.render + overlay + filter + extras #38)
• Renovate config to split pre-1.0 cargo bumps (chore: renovate config — split pre-1.0 cargo bumps #43)
• PR-history narration scrubbed from code comments (chore: strip PR-history narration from code comments #45)

See CHANGELOG.md for the full entry.

Release plan

After merge:

1. Tag `native-v0.7.0` (`@akua-dev/native` napi addons publish first)
2. Wait for native-release.yml green
3. Tag `sdk-v0.7.0` and `akua-v0.7.0` in parallel

Test plan

• `cargo clippy --workspace --all-features` — clean
• `task release:validate` — all 6 example goldens green
• `bun test` (SDK) — 32/32 pass