chore: begin 0.9.0.dev0 + backmerge main into dev (post-0.8.0)

[wjduenow]

Combined post-release housekeeping after v0.8.0 published to PyPI (https://pypi.org/project/signalforge-dbt/0.8.0/):

• Bump __version__ + bundled-skill metadata (SKILL.md + SKILL.eval.json) to 0.9.0.dev0.
• Backmerge v0.8.0 content from main into dev (clean fast-forward — release/0.8.0 was based on dev, so the two never diverged).
• CHANGELOG already carries main's post-release shape (empty [Unreleased] placeholder + dated [0.8.0]), so there is no stale-[Unreleased] carryover to clear.

Canonical validation green: ruff / format / pyright clean; pytest 4504 passed, 6 skipped.

Summary by CodeRabbit

• Chores
  • Prepared the next release by updating version information across the project to 0.9.0.dev0.
  • Added a new 0.8.0 release entry and refreshed the release comparison references in the changelog.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 4b9d63fa-fbf2-443f-83bf-a042c5ad3510

📥 Commits

Reviewing files that changed from the base of the PR and between 8b4dac1 and 005a31d.

📒 Files selected for processing (4)

• CHANGELOG.md
• src/signalforge/__init__.py
• src/signalforge/skills/signalforge/SKILL.md
• src/signalforge/skills/signalforge/assets/SKILL.eval.json

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📝 Walkthrough

Walkthrough

Updates CHANGELOG.md to add a 0.8.0 release section and adjust the Unreleased compare link, while bumping version strings from 0.8.0.dev0 to 0.9.0.dev0 in the package __init__.py, SKILL.md metadata, and SKILL.eval.json.

Changes

Version Bump Housekeeping

Layer / File(s)	Summary
Changelog release framing CHANGELOG.md	Adds "Nothing yet" placeholder under Unreleased, introduces ## [0.8.0] — 2026-07-03 header, and updates the Unreleased compare link to v0.8.0...HEAD.
Version string bumps src/signalforge/__init__.py, src/signalforge/skills/signalforge/SKILL.md, src/signalforge/skills/signalforge/assets/SKILL.eval.json	Bumps version identifiers from 0.8.0.dev0 to 0.9.0.dev0 across the package init, skill frontmatter, and eval asset JSON.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• wjduenow/SignalForge#251: Same version-propagation pattern across CHANGELOG.md, __init__.py, SKILL.md, and SKILL.eval.json for the prior release bump.
• wjduenow/SignalForge#207: Synchronized version-bump housekeeping across the same set of files.
• wjduenow/SignalForge#218: Release housekeeping updating CHANGELOG.md framing alongside package and skill version metadata.

Poem

Hop, hop, another release in sight,
0.8 settles in, 0.9 takes flight 🐇
Changelog tidied, versions aligned,
Skills and assets, all redefined.
A little bump, a tidy trail —
This bunny thumps its happy tail! 🥕

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

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