chore(release): cut SDK 0.10.0 — world-class series (four roles, typed domains, conformance, compat)

[fas89]

Finalizes the release of the world-class SDK series merged on main since v0.9.1 but never published (PyPI data-product-forge-sdk is still at 0.9.1).

What this PR does

• Promotes CHANGELOG.md ## [Unreleased] → ## [0.10.0] — 2026-06-27 (content unchanged — it already documents the series).
• Bumps both version constants in lockstep: pyproject.toml and fluid_sdk.version.SDK_VERSION 0.9.1 → 0.10.0.
• SDK_PROTOCOL_VERSION stays 1 (series is purely additive — no breaking interface change). MIN_CLI_VERSION unchanged.

What ships in 0.10.0 (already merged, previously unreleased)

• feat: world-class SDK — typed domains, four real roles, compat declaration, conformance harnesses #10 — typed value domains (Severity/ActionStatus/Phase), two new role ABCs (InfraProvider, CatalogAdapter) making the "four roles" real, PluginCapabilities + BasePlugin.capabilities(), SDK↔CLI compat declaration, three role conformance harnesses.
• docs: reconcile SDK docs to reality + add a docs-honesty CI gate #11–docs: drop odps from the fluid plugins example (cascade of forge-cli #298) #15 — type/doc-honesty cascade + a docs-honesty CI gate.
• chore(deps): bump actions/checkout from 6 to 7 #9 — actions/checkout 6→7.

Verification (exact release quality-gate, fresh venv)

• ruff check src/ clean · black --check src/ 21 files unchanged
• import check OK · version sync pyproject == SDK_VERSION == 0.10.0
• pytest tests/ → 156 passed, 1 skipped (skip = CLI-not-installed doc check; CI installs the CLI)

After merge: tag v0.10.0 → release.yml publishes to PyPI.