fix: bump stale 0.11.0 path dependency pins to 0.12.0

[paoloantinori]

The workspace was bumped to 0.12.0 in #86 but several crates still pin their path dependencies at 0.11.0, causing build failures:

error: failed to select a version for the requirement `crw-core = "^0.11.0"`
candidate versions found which didn't match: 0.12.0

Affected files (10 pins across 5 files):

• crates/crw-diff/Cargo.toml — crw-core
• crates/crw-monitor/Cargo.toml — crw-core, crw-diff, crw-crawl, crw-extract, crw-renderer
• crates/crw-renderer/Cargo.toml — crw-extract
• crates/crw-crawl/Cargo.toml — crw-diff
• crates/crw-server/Cargo.toml — crw-diff, crw-monitor

Root cause: crw-diff and crw-monitor were added during the 0.11 cycle. Their version pins (plus dependents) were missed during the 0.12.0 bump.

Fixes #95

🤖 Generated with Claude Code

[us]

Superseded by #101 (merged) — closing.

#101 fixes #95 structurally: internal crate versions are now centralized in root [workspace.dependencies] (members inherit via { workspace = true }), so the whole class of "a path-dependency pin was left stale on a bump" can no longer happen, and the guards now fail red if it's attempted.

Two reasons not to merge this PR as-is:

1. It bumps the pins to 0.12.0, but main is already at 0.12.1 — merging it would reintroduce the exact mismatch it set out to fix (^0.12.0 excludes 0.12.1).
2. It also carries unrelated claudedocs/ files (+948 lines).

Thanks for the precise root-cause writeup in #95 — it's exactly what the structural fix is built on.