release: v0.2.0

Justfile

@@ -110,3 +110,5 @@ generate-examples:
     uv run git-graphable examples/repos/repo-pristine --engine mermaid -o examples/assets/pristine.mmd --highlight-critical --critical-branch main --highlight-authors --bare
     uv run git-graphable examples/repos/repo-messy --engine mermaid -o examples/assets/messy.mmd --highlight-wip --highlight-direct-pushes --highlight-stale --bare
     uv run git-graphable examples/repos/repo-features --engine mermaid -o examples/assets/features.mmd --highlight-orphans --highlight-diverging-from main --bare
+    uv run git-graphable examples/repos/repo-risk-silo --engine mermaid -o examples/assets/silo.mmd --highlight-silos --silo-threshold 20 --bare
+    uv run git-graphable examples/repos/repo-complex-hygiene --engine mermaid -o examples/assets/complex.mmd --highlight-back-merges --bare

README.md

@@ -14,7 +14,7 @@ git graphable .
 - **Automatic Visualization**: Generates and opens an image (SVG/PNG) automatically if no output is specified.
 - **Advanced Highlighting**: Visualize author patterns, topological distance, and specific merge paths.
 - **GitHub Integration**: Highlight commits based on pull request status (Merged, Open, Closed, Draft) using the `gh` CLI.
-- **Hygiene Analysis**: Automatically detect WIP commits, direct pushes to protected branches, and squashed PRs.
+- **Hygiene Analysis**: Automatically detect WIP commits, direct pushes to protected branches, squashed PRs, back-merges, and contributor silos.
 - **Health Scoring**: Get a numeric "Hygiene Score" (0-100%) with a color-coded grade and detailed breakdown of workflow anti-patterns.
 - **CI Gating**: Use the `--check` flag to return a non-zero exit code if the hygiene score falls below a threshold (configurable via `--min-score`).
 - **Flexible Input**: Works with local repository paths or remote Git URLs.

examples/EXAMPLES.md

@@ -3,7 +3,7 @@
 This page demonstrates the visual output and hygiene analysis of `git-graphable` using generated example repositories.
 
 ## 1. Pristine Repository (Score: 100%)
-Demonstrates a clean, PR-based workflow with author highlighting and critical branch marking.
+Demonstrates a clean, PR-based workflow with multi-author highlighting and critical branch marking.
 
 **Command:**
 ```bash
@@ -45,8 +45,8 @@ git-graphable repo-messy --highlight-wip --highlight-direct-pushes --highlight-s
 
 **Hygiene Report:**
 - **Overall Score**: 76% (C)
-- **Direct Pushes**: -15% (Non-merge commits on `main`)
-- **WIP Commits**: -9% (3 commits with `WIP:` in message)
+- **Direct Pushes**: -15%
+- **WIP Commits**: -9%
 
 **Output:**
 ```mermaid
@@ -73,8 +73,107 @@ f534dfb429831e547f418960a9c1091af158664d --> 147f97d5dd2c89f8078e0cc67aab5d49548
 
 ---
 
-## 3. Special Features (Score: 93%)
-Demonstrates topological analysis features like orphan/dangling commits and divergence (behind base).
+## 3. Risk Analysis (Bus Factor)
+Highlights branches with many commits but only one contributor. This indicates a "Review Risk" where large amounts of code are being written in isolation.
+
+**Command:**
+```bash
+git-graphable repo-risk-silo --highlight-silos --silo-threshold 20
+```
+
+**Output:**
+```mermaid
+flowchart TD
+3ea61173cf4a6c69db17b4c6501039d33a6982b0["3ea6117 - main - Demo User - 20260305105901"]
+5efcb8d1f1ebb2795a738df951c5e06203f262b5["5efcb8d - Alice - 20260305105901"]
+9195465c812ad54e5665012678f294b2f22d7184["9195465 - Alice - 20260305105901"]
+d3a2ea8a3c8ed7409403d836f4280e7df24fe0a3["d3a2ea8 - Alice - 20260305105901"]
+cd27397b8f88e090e5269311b26b77b10a61f954["cd27397 - Alice - 20260305105901"]
+43458ccb4b4d435f1e726a71c36f4d74dfef3d88["43458cc - Alice - 20260305105901"]
+5781a1dcd158780172ef530c7d3c4a5bbfddbb9b["5781a1d - Alice - 20260305105901"]
+192391841cd43546840f9a73ca82d590a596f3d1["1923918 - Alice - 20260305105901"]
+1123939f9dc7e8ac88c44560cea2854b25b8633a["1123939 - Alice - 20260305105901"]
+3bb33732ee23b3c90eb56131d7c18461e635efab["3bb3373 - Alice - 20260305105901"]
+92d7b93cd7f52406236dc1a771c18d3101097ac0["92d7b93 - Alice - 20260305105901"]
+edc7e0989161e639f69a2e918315070a9b650257["edc7e09 - Alice - 20260305105901"]
+aaa8545d80ce1c7f93f0ed635a642d52e537d418["aaa8545 - Alice - 20260305105901"]
+44f32db29d6b3a917fe1f0493a78a563d164eccb["44f32db - Alice - 20260305105901"]
+fcb262b2e3dce5b6d005cf5a2ee1e9d51a923053["fcb262b - Alice - 20260305105901"]
+588cfa14d70f6679bb53588b4bcb8fa49adedb90["588cfa1 - Alice - 20260305105901"]
+fc5736cf0a21cba3426fd0853c24f20592b2c925["fc5736c - Alice - 20260305105901"]
+a4f8461065731a429ad9ae8c044827329d3083d5["a4f8461 - Alice - 20260305105901"]
+543b5e4de434310b1f90817fd89ac19f735adaa8["543b5e4 - Alice - 20260305105901"]
+b1fdd9163e15af3eb69105e1337bbe75813f61f7["b1fdd91 - Alice - 20260305105901"]
+b1bba43af1237077c8d101b88d5a2e7aafdd3806["b1bba43 - Alice - 20260305105901"]
+807f19736e0a1903dc83ec62cdf810bc5c043a1a["807f197 - Alice - 20260305105901"]
+30c28e9ac75e9ca65360d6c000e3dd62b0ff48f7["30c28e9 - Alice - 20260305105901"]
+f012b1d4971e5d6e9619396f9adbb32d311e0c80["f012b1d - Alice - 20260305105901"]
+76310c4489cb4667e1f31e540b40b42c30b70190["76310c4 - Alice - 20260305105901"]
+0007580446cab2af471bc90a29dd094175ef5617["0007580 [SILO] - feature/huge-silo - Alice - 20260305105901"]
+style 0007580446cab2af471bc90a29dd094175ef5617 stroke:blue,stroke-width:6px
+3ea61173cf4a6c69db17b4c6501039d33a6982b0 --> 5efcb8d1f1ebb2795a738df951c5e06203f262b5
+5efcb8d1f1ebb2795a738df951c5e06203f262b5 --> 9195465c812ad54e5665012678f294b2f22d7184
+9195465c812ad54e5665012678f294b2f22d7184 --> d3a2ea8a3c8ed7409403d836f4280e7df24fe0a3
+d3a2ea8a3c8ed7409403d836f4280e7df24fe0a3 --> cd27397b8f88e090e5269311b26b77b10a61f954
+cd27397b8f88e090e5269311b26b77b10a61f954 --> 43458ccb4b4d435f1e726a71c36f4d74dfef3d88
+43458ccb4b4d435f1e726a71c36f4d74dfef3d88 --> 5781a1dcd158780172ef530c7d3c4a5bbfddbb9b
+5781a1dcd158780172ef530c7d3c4a5bbfddbb9b --> 192391841cd43546840f9a73ca82d590a596f3d1
+192391841cd43546840f9a73ca82d590a596f3d1 --> 1123939f9dc7e8ac88c44560cea2854b25b8633a
+1123939f9dc7e8ac88c44560cea2854b25b8633a --> 3bb33732ee23b3c90eb56131d7c18461e635efab
+3bb33732ee23b3c90eb56131d7c18461e635efab --> 92d7b93cd7f52406236dc1a771c18d3101097ac0
+92d7b93cd7f52406236dc1a771c18d3101097ac0 --> edc7e0989161e639f69a2e918315070a9b650257
+edc7e0989161e639f69a2e918315070a9b650257 --> aaa8545d80ce1c7f93f0ed635a642d52e537d418
+aaa8545d80ce1c7f93f0ed635a642d52e537d418 --> 44f32db29d6b3a917fe1f0493a78a563d164eccb
+44f32db29d6b3a917fe1f0493a78a563d164eccb --> fcb262b2e3dce5b6d005cf5a2ee1e9d51a923053
+fcb262b2e3dce5b6d005cf5a2ee1e9d51a923053 --> 588cfa14d70f6679bb53588b4bcb8fa49adedb90
+588cfa14d70f6679bb53588b4bcb8fa49adedb90 --> fc5736cf0a21cba3426fd0853c24f20592b2c925
+fc5736cf0a21cba3426fd0853c24f20592b2c925 --> a4f8461065731a429ad9ae8c044827329d3083d5
+a4f8461065731a429ad9ae8c044827329d3083d5 --> 543b5e4de434310b1f90817fd89ac19f735adaa8
+543b5e4de434310b1f90817fd89ac19f735adaa8 --> b1fdd9163e15af3eb69105e1337bbe75813f61f7
+b1fdd9163e15af3eb69105e1337bbe75813f61f7 --> b1bba43af1237077c8d101b88d5a2e7aafdd3806
+b1bba43af1237077c8d101b88d5a2e7aafdd3806 --> 807f19736e0a1903dc83ec62cdf810bc5c043a1a
+807f19736e0a1903dc83ec62cdf810bc5c043a1a --> 30c28e9ac75e9ca65360d6c000e3dd62b0ff48f7
+30c28e9ac75e9ca65360d6c000e3dd62b0ff48f7 --> f012b1d4971e5d6e9619396f9adbb32d311e0c80
+f012b1d4971e5d6e9619396f9adbb32d311e0c80 --> 76310c4489cb4667e1f31e540b40b42c30b70190
+76310c4489cb4667e1f31e540b40b42c30b70190 --> 0007580446cab2af471bc90a29dd094175ef5617
+```
+
+---
+
+## 4. Redundant History
+Highlights redundant back-merges (merging `main` into a feature branch). This helps identify where a rebase strategy might have been cleaner.
+
+**Command:**
+```bash
+git-graphable repo-complex-hygiene --highlight-back-merges
+```
+
+**Output:**
+```mermaid
+flowchart TD
+366874227b985955d27323453b9e075f53065692["3668742 - Demo User - 20260305105901"]
+89c693c037b2eab4256beab9ead6572e9c9d0f58["89c693c - Demo User - 20260305105901"]
+71589446a700af13cb14ee4fea04c4ab1ad0a1e1["7158944 - Demo User - 20260305105901"]
+11f210a834080631aeb343dcec09abde01f15e44["11f210a - Demo User - 20260305105901"]
+62d326c80963476bf06537d224f66db9f48f30b4["62d326c [BACK-MERGE] - feature/noisy-history - Demo User - 20260305105901"]
+style 62d326c80963476bf06537d224f66db9f48f30b4 stroke:orange,stroke-width:4px,stroke-dasharray: 2 2
+96f27dee0ae8c3eb5abb9f9b04b4ead750a729ba["96f27de - main - Demo User - 20260305105901"]
+99d822031a58c60594158beecfb254695af84db9["99d8220 - Demo User - 20260305105901"]
+594597456b51ab193d76035dc5119f70b4cdaa7a["5945974 - feature/to-be-squashed - Demo User - 20260305105901"]
+366874227b985955d27323453b9e075f53065692 --> 89c693c037b2eab4256beab9ead6572e9c9d0f58
+366874227b985955d27323453b9e075f53065692 --> 71589446a700af13cb14ee4fea04c4ab1ad0a1e1
+89c693c037b2eab4256beab9ead6572e9c9d0f58 --> 62d326c80963476bf06537d224f66db9f48f30b4
+71589446a700af13cb14ee4fea04c4ab1ad0a1e1 --> 62d326c80963476bf06537d224f66db9f48f30b4
+71589446a700af13cb14ee4fea04c4ab1ad0a1e1 --> 96f27dee0ae8c3eb5abb9f9b04b4ead750a729ba
+71589446a700af13cb14ee4fea04c4ab1ad0a1e1 --> 11f210a834080631aeb343dcec09abde01f15e44
+11f210a834080631aeb343dcec09abde01f15e44 --> 99d822031a58c60594158beecfb254695af84db9
+99d822031a58c60594158beecfb254695af84db9 --> 594597456b51ab193d76035dc5119f70b4cdaa7a
+```
+
+---
+
+## 5. Topological Analysis
+Demonstrates features like orphan/dangling commits and divergence (behind base).
 
 **Command:**
 ```bash
@@ -96,7 +195,7 @@ style ebeaa6afb7b85a2d84d8aa5279ca3ad50f54a987 stroke:orange,stroke-width:2px,st
 
 ---
 
-## 4. CI Mode (Gating)
+## 6. CI Mode (Gating)
 Demonstrates how to use `git-graphable` as a CI gate. The tool returns a non-zero exit code if the hygiene score is below the threshold.
 
 **Command (Fails):**

examples/generate_demos.py

@@ -129,13 +129,67 @@ def generate_features():
     run_git(["branch", "-D", "detached-work"], path)
 
 
+def generate_risk_silo():
+    print("Generating repo-risk-silo...")
+    path = create_base_repo("repo-risk-silo")
+
+    # Create a long-running branch with only one author (Alice)
+    run_git(["checkout", "-b", "feature/huge-silo"], path)
+    run_git(["config", "user.name", "Alice"], path)
+    run_git(["config", "user.email", "alice@example.com"], path)
+
+    for i in range(25):
+        (path / f"work_{i}.txt").write_text(f"work {i}")
+        run_git(["add", f"work_{i}.txt"], path)
+        run_git(["commit", "-m", f"chore: alice working hard {i}"], path)
+
+    run_git(["checkout", "main"], path)
+
+
+def generate_squash_and_backmerge():
+    print("Generating repo-complex-hygiene...")
+    path = create_base_repo("repo-complex-hygiene")
+
+    # 1. A branch that was back-merged (main into feature)
+    run_git(["checkout", "-b", "feature/noisy-history"], path)
+    (path / "feat.txt").write_text("feat")
+    run_git(["add", "feat.txt"], path)
+    run_git(["commit", "-m", "feat: start working"], path)
+
+    run_git(["checkout", "main"], path)
+    (path / "main_work.txt").write_text("main")
+    run_git(["add", "main_work.txt"], path)
+    run_git(["commit", "-m", "chore: some main work"], path)
+
+    run_git(["checkout", "feature/noisy-history"], path)
+    run_git(
+        ["merge", "main", "-m", "Merge branch 'main' into feature/noisy-history"], path
+    )
+
+    # 2. A branch intended for squashing (manual simulation)
+    run_git(["checkout", "main"], path)
+    run_git(["checkout", "-b", "feature/to-be-squashed"], path)
+    for i in range(3):
+        (path / f"part_{i}.txt").write_text(f"part {i}")
+        run_git(["add", f"part_{i}.txt"], path)
+        run_git(["commit", "-m", f"feat: part {i} of squashed work"], path)
+
+    # Simulate the squash commit on main (we won't link it here, highlighter does it via PR OIDs)
+    run_git(["checkout", "main"], path)
+    (path / "squashed_result.txt").write_text("all parts")
+    run_git(["add", "squashed_result.txt"], path)
+    run_git(["commit", "-m", "feat: implementing all parts (#123)"], path)
+
+
 def main():
     REPOS_DIR.mkdir(exist_ok=True)
     ASSETS_DIR.mkdir(exist_ok=True)
 
     generate_pristine()
     generate_messy()
     generate_features()
+    generate_risk_silo()
+    generate_squash_and_backmerge()
 
     print("\nDone! Demo repositories created in examples/repos/")
 

pyproject.toml

@@ -5,21 +5,25 @@ authors = [
 dependencies = [
     "graphable>=0.6.0",
 ]
-description = "A powerful tool to convert Git commit history into beautiful flowcharts."
+description = "A powerful Git history visualizer and hygiene linter with CI gating."
 keywords = [
     "analysis",
+    "ci",
     "d2",
     "git",
+    "git-flow",
+    "github",
     "graph",
     "hygiene",
+    "lint",
     "mermaid",
     "topology",
     "visualization",
 ]
 name = "git-graphable"
 readme = "README.md"
 requires-python = ">=3.13"
-version = "0.1.0"
+version = "0.2.0"
 
 [project.optional-dependencies]
 cli = [