chore: bump version to 1.0.0 and update changelog

[Krishan27]

Final v1.0.0 release prep.

What's in this PR

• Version bump: 0.9.0 → 1.0.0
• CHANGELOG entry for v1.0.0 covering all milestone features
• Scope consistency audit: version references updated across all docs surfaces
• package.json description updated to reflect v1.0 scope

v1.0.0 features (all already merged to main)

• Stable fingerprints (feat(core): add stable finding fingerprints to scanner output #175)
• Baseline mode (feat(cli): add baseline mode for CI enforcement of new debt only #177)
• Safety model docs (docs: add FlagLint safety model page #179)
• JSON output contract (docs(json): publish v1.x machine-readable output contract #178)
• Exit code contract (docs: formalize stable exit-code contract for v1.x #182)
• Fixture expansion (test(fixtures): expand golden fixture coverage for v1.0 #180)
• ADR 007 (docs(adr): ADR 007 — stable finding fingerprint schema #174) + ADR 008 (docs(adr): ADR 008 — baseline mode for CI adoption #176)

Part of the v1.0.0 milestone.

Summary by CodeRabbit

Release Notes

• New Features

  • Stable finding fingerprints for consistent analysis results
  • Baseline mode for CI gating capabilities
  • Safety model documentation
  • Stable v1.x JSON output contract
  • Stable CLI exit-code contract
  • Expanded fixture coverage

• Documentation

  • Updated guides and documentation for v1.0.0 release

[coderabbitai]

📝 Walkthrough

Walkthrough

Bumps the flaglint package version from 0.9.0 to 1.0.0, updates the package description, adds the v1.0.0 release entry to both the root CHANGELOG.md and the docs-src changelog page, and updates all documentation version display strings and guide verification badges from v0.9.0 to v1.0.0.

Changes

v1.0.0 Release

Layer / File(s)	Summary
Package version bump and changelog entries package.json, CHANGELOG.md, docs-src/content/docs/docs/reference/changelog.md	version changed to 1.0.0 with an updated description; both changelogs gain a new v1.0.0 section covering stable finding fingerprints, baseline CI mode, safety model docs, JSON output contract, exit-code contract, ADR 007/008 references, expanded fixture coverage, and the v1.x scope definition.
Docs version strings and guide badges docs-src/pages/index.astro, docs-src/pages/guides/index.astro, docs-src/pages/guides/launchdarkly-to-openfeature-nodejs.astro	Homepage terminal demo label, guides index card verified-badge, and two references inside the LaunchDarkly-to-OpenFeature Node.js guide all updated from v0.9.0 to v1.0.0.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• flaglint/flaglint#139: Performs the same pattern of changes — package.json version bump, new changelog section, and LaunchDarkly→OpenFeature guide badge/version string updates — for a previous release.
• flaglint/flaglint#176: Adds the full ADR 008 baseline-mode specification that this PR's v1.0.0 changelog entry explicitly references under "baseline mode for CI gating."
• flaglint/flaglint#178: Defines the scan --format json schema and baseline JSON contract that this PR's changelog entry documents as the stable v1.x JSON output contract.

Poem

🐇 Hop, hop, hooray — we've hit one-point-oh!
No more zero-dot-nine in the terminal's glow.
The changelog is written, the badges are bright,
Baseline mode, fingerprints — all locked up tight.
FlagLint is stable, the bunnies rejoice,
v1.0.0 speaks in a confident voice! 🎉

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly and concisely describes the main change: bumping the version to 1.0.0 and updating the changelog.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch release/v1.0.0

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