fix: release docs and version-guard cargo pkgid format

[robdefeo]

Summary

• Documents that git add -f CHANGELOG.md is required during the release process (it's gitignored on main)
• Fixes version-guard to handle the updated cargo pkgid output format (path+file://...#version instead of name@version)

Test plan

• Pre-commit hook passes on a non-release branch commit

[greptile-apps]

Greptile Summary

This PR makes two targeted fixes to the release tooling: it patches the cargo pkgid output format change (from name@version to path+file://...#version) across both the version-guard pre-commit hook and the changelog just recipe, and documents the required git add -f CHANGELOG.md step that was previously missing from RELEASING.md.

• .config/lefthook.json: version-guard sed pattern updated from s/.*@// to s/.*[#@]// — the character class correctly matches whichever delimiter (# or @) appears in the cargo pkgid output, making the hook forward- and backward-compatible.
• justfile: changelog recipe now extracts the version from cargo pkgid (using the same [#@] fix) and forwards it as --tag \"v${version}\" to git-cliff, so the generated changelog is tagged with the release version rather than being untagged.
• RELEASING.md: Adds the git add -f CHANGELOG.md step between changelog generation and the release commit, preventing a silent omission of CHANGELOG.md from the release commit (since the file is gitignored on main).

Confidence Score: 5/5

Safe to merge — all three changes are precise, low-risk fixes with no functional regressions.

The sed character class [#@] is greedy-correct and handles both old and new cargo pkgid formats without ambiguity. The --tag addition to git-cliff is consistent with the version bump flow. The doc fix prevents a silent release bug. No new logic paths, no security surface, no test regressions possible.

No files require special attention.

Important Files Changed

Filename	Overview
.config/lefthook.json	Updated version-guard sed regex from s/.*@// to s/.*[#@]// to handle both legacy name@version and new path+file://...#version cargo pkgid formats.
RELEASING.md	Added missing git add -f CHANGELOG.md step to document that CHANGELOG.md must be force-added before the release commit since it is gitignored on main.
justfile	Updated changelog recipe to extract version from cargo pkgid (using same [#@] fix) and pass it as --tag "v${version}" to git-cliff, ensuring the generated changelog is correctly tagged.

Sequence Diagram

sequenceDiagram
    participant Dev as Developer
    participant Git as Git / Lefthook
    participant Cargo as cargo pkgid
    participant Cliff as git-cliff

    Dev->>Git: git checkout -b release/vx.y.z
    Dev->>Dev: Edit Cargo.toml version = x.y.z
    Dev->>Cargo: just changelog → cargo pkgid
    Cargo-->>Dev: path+file://...#x.y.z (new) or name@x.y.z (old)
    Dev->>Dev: sed 's/.*[#@]//' → x.y.z
    Dev->>Cliff: git-cliff --tag vx.y.z --output CHANGELOG.md
    Cliff-->>Dev: CHANGELOG.md generated
    Dev->>Git: git add -f CHANGELOG.md
    Dev->>Git: git commit -am "chore: release vx.y.z"
    Git->>Git: pre-commit: version-guard
    Git->>Cargo: cargo pkgid
    Cargo-->>Git: path+file://...#x.y.z
    Git->>Git: sed 's/.*[#@]//' → x.y.z ≠ 0.0.0 on release/* → OK
    Git->>Git: pre-commit: changelog-guard → CHANGELOG.md staged → OK
    Dev->>Git: git tag vx.y.z && git push origin vx.y.z

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_{Reviews (2): Last reviewed commit: "fix(changelog): pass version tag to git-..." | Re-trigger Greptile}