feat(git-plugin): add complete git workflow automation suite

## Why
The git plugin only covered a partial slice of common git workflows.
This adds the remaining skill set (branches, commits, history, remotes,
submodules, workflow, worktrees) plus a git-orchestrate agent so the
plugin can handle end-to-end git automation instead of a handful of
commands.

## Implementation Notes
Each new skill was validated against its research docs and org
conventions after initial authoring, which surfaced hallucinated
version pins, factual errors, and completeness gaps that were
corrected in the same pass rather than left for follow-up.

## Impact
Bumps the git plugin to 1.3.0.

Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>

plugins/git/skills/pc-author/references/README.md

@@ -0,0 +1,14 @@
+---
+source_keys:
+  - context7-pre-commit-com
+  - pre-commit-com
+  - context7-pre-commit-hooks
+  - pre-commit-hooks-github
+---
+
+# references/
+
+| File | Purpose |
+|---|---|
+| `hooks-by-language.md` | Hook recommendations by language/context — repo, rev, and rationale for adding hooks |
+| `sources.md` | Provenance: research sources that informed this skill |

plugins/git/skills/pc-author/references/hooks-by-language.md

@@ -19,12 +19,16 @@ Always check the existing config for duplicates before proposing.
 | `trailing-whitespace` | `https://github.com/pre-commit/pre-commit-hooks` | `v6.0.0` | Strips trailing whitespace — prevents invisible diff noise |
 | `check-merge-conflict` | `https://github.com/pre-commit/pre-commit-hooks` | `v6.0.0` | Catches unresolved merge markers before commit |
 | `detect-private-key` | `https://github.com/pre-commit/pre-commit-hooks` | `v6.0.0` | Blocks PEM private key material |
+| `check-added-large-files` | `https://github.com/pre-commit/pre-commit-hooks` | `v6.0.0` | Blocks accidentally committing large binary files |
+| `check-case-conflict` | `https://github.com/pre-commit/pre-commit-hooks` | `v6.0.0` | Catches filenames that would collide on case-insensitive filesystems |
+| `mixed-line-ending` | `https://github.com/pre-commit/pre-commit-hooks` | `v6.0.0` | Normalizes line endings |
+| `no-commit-to-branch` | `https://github.com/pre-commit/pre-commit-hooks` | `v6.0.0` | Blocks direct commits to protected branches — defaults to blocking `main`+`master` with no args; add `args: [--branch, <name>]` only to protect additional branch names |
 
 ## Shell (`.sh`)
 
 | Hook ID | Repo | Rev | Rationale |
 |---------|------|-----|-----------|
-| `shellcheck` | `https://github.com/jumanjihouse/pre-commit-hooks` | `3.0.0` | Static analysis for shell scripts; catches common errors |
+| `shellcheck` | `https://github.com/jumanjihouse/pre-commit-hooks` | `3.0.0` | **Unverified — not in research corpus, verify upstream before use.** Static analysis for shell scripts; catches common errors |
 
 Recommended args: `args: [--severity=warning]`
 
@@ -62,7 +66,7 @@ For Kubernetes/Helm YAML with custom tags, add `args: ['--unsafe']` and `exclude
 
 | Hook ID | Repo | Rev | Rationale |
 |---------|------|-----|-----------|
-| `gitleaks` | `https://github.com/gitleaks/gitleaks` | `v8.21.2` | Scans for secrets and high-entropy strings |
+| `gitleaks` | `https://github.com/gitleaks/gitleaks` | `v8.30.1` | **Unverified — not in research corpus, verify upstream before use.** Scans for secrets and high-entropy strings |
 
 ## Commit message
 
@@ -102,3 +106,15 @@ Language choices for local hooks:
 - `unsupported_script` — script at a repo-relative path
 - `fail` — always-fail guard; `entry` text becomes the error message
 - `python` — isolated venv; use `additional_dependencies` for pip packages
+- `node` — isolated node env; `additional_dependencies` are npm packages
+- `ruby` — isolated gem env; `additional_dependencies` are gems
+- `golang` — builds from source; `additional_dependencies` are Go module paths
+- `rust` — Cargo build
+- `docker` — Docker image built from `entry`; use when no other language fits
+- `docker_image` — pulls a pre-built Docker image by `entry`
+- `conda` — Conda environment; conda-native hooks
+- `coursier` — Coursier (Scala/JVM) environment; JVM hooks
+
+## Rev pin freshness
+
+The revs above were last verified current at time of writing (matched against the plugin's own research corpus in `docs/research/docs/pre-commit/`; rows marked "Unverified" have no such backing and must be checked against upstream before use). Since `pc-author`'s "Rev staleness" check treats this table as ground truth, a pin that goes stale here produces false-positive staleness warnings for users who already have a newer, correct rev. Re-verify these pins periodically (e.g. against each repo's latest release tag). When in doubt, treat `pre-commit autoupdate`'s own output as the authoritative staleness signal, not a mismatch against this table.

plugins/git/skills/pc-author/references/sources.md

@@ -5,7 +5,7 @@
 - **URL:** context7:/pre-commit/pre-commit.com
 - **Description:** Official pre-commit.com documentation — installation, configuration schema, CLI reference, hook authoring, advanced features, troubleshooting
 - **Contributing files:** SKILL.md, references/hooks-by-language.md
-- **Research doc:** plugins/kyberforge/docs/research/docs/pre-commit/sources.md
+- **Research doc:** plugins/git/docs/research/docs/pre-commit/{overview,configuration,cli-reference,hook-authoring}.md
 - **Status:** `extracted`
 
 ## pre-commit-com
@@ -13,7 +13,7 @@
 - **URL:** https://pre-commit.com/
 - **Description:** Pre-commit framework homepage — full docs covering install, config, CLI, hook authoring, stages, local hooks, meta hooks, hazmat helpers, CI integration
 - **Contributing files:** SKILL.md, references/hooks-by-language.md
-- **Research doc:** plugins/kyberforge/docs/research/docs/pre-commit/sources.md
+- **Research doc:** plugins/git/docs/research/docs/pre-commit/{overview,configuration,cli-reference,hook-authoring}.md
 - **Status:** `extracted`
 
 ## context7-pre-commit-hooks
@@ -21,7 +21,7 @@
 - **URL:** context7:/pre-commit/pre-commit-hooks
 - **Description:** Official pre-commit-hooks collection — all available hook IDs with options and examples
 - **Contributing files:** references/hooks-by-language.md
-- **Research doc:** plugins/kyberforge/docs/research/docs/pre-commit/sources.md
+- **Research doc:** plugins/git/docs/research/docs/pre-commit/hooks-reference.md § pre-commit-hooks (official collection)
 - **Status:** `extracted`
 
 ## pre-commit-hooks-github
@@ -29,5 +29,5 @@
 - **URL:** https://raw.githubusercontent.com/pre-commit/pre-commit-hooks/main/README.md
 - **Description:** Official pre-commit-hooks README — complete hook listing with all args, categories, deprecated hooks, and latest version (v6.0.0)
 - **Contributing files:** references/hooks-by-language.md
-- **Research doc:** plugins/kyberforge/docs/research/docs/pre-commit/sources.md
+- **Research doc:** plugins/git/docs/research/docs/pre-commit/hooks-reference.md § pre-commit-hooks (official collection), § Deprecated hooks
 - **Status:** `extracted`