Bump workspace version to 0.10.0 for release

[cscheid]

Version bump for the v0.10.0 release, per claude-notes/instructions/release-runbook.md.

Ships since v0.9.0:

• Mermaid diagrams as a regular rendering feature (bd-5m4ga0s1, Mermaid diagrams as a regular rendering feature (bd-5m4ga0s1) #401)
• pampa raw-json: lossless pampa-native JSON reader/writer (bd-en2hvrwn, pampa: raw-json — lossless pampa-native JSON reader/writer (bd-en2hvrwn) #400)

Checks done locally:

• cargo update --workspace — only the 28 workspace members bumped, no external dep changes
• cargo build --bin q2 --locked → q2 (quarto 2) 0.10.0
• cargo nextest run --workspace → 10243 passed, 197 skipped

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