diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..5d1877a
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,21 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  verify-statusline:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: oven-sh/setup-bun@v2
+
+      - name: Verify statusline generation
+        run: python3 scripts/verify_context.py
+        shell: bash
diff --git a/README.ja.md b/README.ja.md
index c2a0b9f..611651a 100644
--- a/README.ja.md
+++ b/README.ja.md
@@ -107,7 +107,7 @@ npx skills add webup/skills-cc -s webup-statusline -g
 
 **effort アイコンの上書き**は `--effort-icon` で。プリセット：`arrow`（`↯`、デフォルト）、`bolt`（`ϟ`）、`flash`（`⚡`）、`reason`（`∴`）、`dot`（`◉`）、`none`（非表示）。任意の文字も受け付けます。
 
-> ⚠️ **注意：** 生成されたスクリプトは JSON 解析に `jq` が必要です。スキルは `~/.claude/scripts/statusline.sh` を自動生成し `~/.claude/settings.json` を更新します。Claude Code を再起動すると反映されます。
+> ⚠️ **注意：** 生成されたスクリプトは JSON 解析に `jq` が必要です。Windows では WinGet や scoop でインストールされた jq のパスを自動検出します。それでも jq が見つからない場合は、手動でディレクトリを PATH に追加してください。スキルは `~/.claude/scripts/statusline.sh` を自動生成し `~/.claude/settings.json` を更新します。Claude Code を再起動すると反映されます。
 
 ### 🎰 webup-buddy-reroll
 
diff --git a/README.md b/README.md
index 30087a6..39f7a3d 100644
--- a/README.md
+++ b/README.md
@@ -107,7 +107,7 @@ The `context` column intentionally has no prefix icon in any theme — the color
 
 **Override the effort icon** via `--effort-icon`. Presets: `arrow` (`↯`, default), `bolt` (`ϟ`), `flash` (`⚡`), `reason` (`∴`), `dot` (`◉`), `none` (hide). A raw character is also accepted.
 
-> ⚠️ **Note:** The generated script requires `jq` for JSON parsing. The skill writes to `~/.claude/scripts/statusline.sh` and updates `~/.claude/settings.json` — restart Claude Code to see it.
+> ⚠️ **Note:** The generated script requires `jq` for JSON parsing. On Windows, it auto-detects jq installed via WinGet or scoop; if jq is still not found, add its directory to your PATH manually. The skill writes to `~/.claude/scripts/statusline.sh` and updates `~/.claude/settings.json` — restart Claude Code to see it.
 
 ### 🎰 webup-buddy-reroll
 
diff --git a/README.zh.md b/README.zh.md
index f012886..4d71114 100644
--- a/README.zh.md
+++ b/README.zh.md
@@ -107,7 +107,7 @@ npx skills add webup/skills-cc -s webup-statusline -g
 
 **替换 effort 图标** 用 `--effort-icon`。预设值：`arrow`（`↯`，默认）、`bolt`（`ϟ`）、`flash`（`⚡`）、`reason`（`∴`）、`dot`（`◉`）、`none`（隐藏）。也可直接传入任意字符。
 
-> ⚠️ **注意：** 生成的脚本需要 `jq` 解析 JSON。本技能会自动写入 `~/.claude/scripts/statusline.sh` 并更新 `~/.claude/settings.json` —— 重启 Claude Code 即可生效。
+> ⚠️ **注意：** 生成的脚本需要 `jq` 解析 JSON。在 Windows 下，脚本会自动检测 WinGet 和 scoop 安装的 jq 路径；若仍无法找到 jq，请手动将其目录添加到 PATH。本技能会自动写入 `~/.claude/scripts/statusline.sh` 并更新 `~/.claude/settings.json` —— 重启 Claude Code 即可生效。
 
 ### 🎰 webup-buddy-reroll
 
diff --git a/scripts/verify_context.py b/scripts/verify_context.py
new file mode 100644
index 0000000..43e7a54
--- /dev/null
+++ b/scripts/verify_context.py
@@ -0,0 +1,106 @@
+#!/usr/bin/env python3
+"""Verify that every statusline theme+element combo generates valid bash."""
+
+import subprocess
+import sys
+import tempfile
+import os
+
+THEMES = ["gruvbox", "dracula", "robbyrussell", "minimal"]
+ELEMENT_SETS = [
+    "model",
+    "model,context,effort,git,dir",
+    "model,context,cost,effort,style,git,dir,worktree,vim",
+]
+GENERATOR = "skills/webup-statusline/scripts/generate.mjs"
+
+IS_WINDOWS = sys.platform == "win32"
+
+
+def run(cmd, input=None):
+    return subprocess.run(cmd, capture_output=True, encoding="utf-8", errors="replace", input=input)
+
+
+def bash_syntax_ok(script):
+    """Check bash syntax via ``bash -n``.
+
+    Skipped on Windows: Git Bash's ``bash -n`` on GitHub Actions runners
+    returns exit code 1 with empty stderr for all scripts, making it
+    unreliable.  Linux and macOS CI already cover this check.
+
+    Returns (ok: bool, detail: str).
+    """
+    if IS_WINDOWS:
+        return True, "(skipped on Windows — Linux/macOS CI covers bash -n)"
+
+    fd, path = tempfile.mkstemp(suffix=".sh")
+    try:
+        with os.fdopen(fd, "w", encoding="utf-8", newline="\n") as f:
+            f.write(script)
+        br = subprocess.run(["bash", "-n", path], capture_output=True, text=True)
+        if br.returncode == 0:
+            return True, ""
+        return False, br.stderr.strip()
+    finally:
+        os.unlink(path)
+
+
+def main():
+    errors = []
+    for theme in THEMES:
+        for elements in ELEMENT_SETS:
+            label = f"{theme} / {elements}"
+            r = run(["bun", GENERATOR, "--elements", elements, "--theme", theme])
+            if r.returncode != 0:
+                errors.append(f"FAIL generate {label}: {r.stderr.strip()}")
+                continue
+
+            script = r.stdout
+
+            # 1. bash syntax check (non-Windows only; Windows runners skip this)
+            ok, detail = bash_syntax_ok(script)
+            if not ok:
+                errors.append(f"FAIL bash -n {label}: {detail}")
+
+            # 2. must contain jq auto-detect block
+            if "command -v jq" not in script:
+                errors.append(f"FAIL missing jq detect block in {label}")
+
+            # 3. must contain shebang
+            if not script.startswith("#!/bin/bash"):
+                errors.append(f"FAIL missing shebang in {label}")
+
+            # 4. must contain at least one jq invocation per requested element
+            for el in elements.split(","):
+                el = el.strip()
+                if el == "model" and "model.display_name" not in script:
+                    errors.append(f"FAIL missing model field in {label}")
+                if el == "context" and "remaining_percentage" not in script:
+                    errors.append(f"FAIL missing context field in {label}")
+                if el == "effort" and "effortLevel" not in script:
+                    errors.append(f"FAIL missing effort field in {label}")
+                if el == "git" and "branch --show-current" not in script:
+                    errors.append(f"FAIL missing git field in {label}")
+                if el == "dir" and "short_dir" not in script:
+                    errors.append(f"FAIL missing dir field in {label}")
+                if el == "cost" and "total_cost_usd" not in script:
+                    errors.append(f"FAIL missing cost field in {label}")
+                if el == "style" and "output_style" not in script:
+                    errors.append(f"FAIL missing style field in {label}")
+                if el == "worktree" and "is_worktree" not in script:
+                    errors.append(f"FAIL missing worktree field in {label}")
+                if el == "vim" and "vim.mode" not in script:
+                    errors.append(f"FAIL missing vim field in {label}")
+
+    if errors:
+        for e in errors:
+            print(e, file=sys.stderr)
+        print(f"\n{len(errors)} check(s) failed", file=sys.stderr)
+        sys.exit(1)
+
+    combos = len(THEMES) * len(ELEMENT_SETS)
+    print(f"All {combos} theme×element combos passed")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/skills/webup-statusline/SKILL.md b/skills/webup-statusline/SKILL.md
index 2456a70..76cc9a3 100644
--- a/skills/webup-statusline/SKILL.md
+++ b/skills/webup-statusline/SKILL.md
@@ -29,7 +29,7 @@ This skill generates a bash script tailored to your preferences and installs it
 
 ## Prerequisites
 
-- **jq** — required by the generated status line script to parse JSON input from Claude Code
+- **jq** — required by the generated status line script to parse JSON input from Claude Code. On Windows, the script auto-detects jq installed via WinGet or scoop; if jq is still not found, add its directory to your PATH manually.
 - **Bun** — required to run the generator. Use `npx -y bun` if not installed globally.
 
 ## Usage
@@ -186,5 +186,5 @@ Claude Opus 4.7 · low · skills-cc · main
 
 - Generated script is saved to `~/.claude/scripts/statusline.sh`
 - Running the skill again overwrites the existing script — just re-run to change theme or columns
-- The script uses `jq` to parse JSON input — make sure it's installed
+- The script uses `jq` to parse JSON input — make sure it's installed. On Windows, the script auto-detects WinGet and scoop jq paths; if jq is still not found, add it to PATH manually.
 - Git dirty detection uses `--no-optional-locks` to avoid interfering with other git operations
diff --git a/skills/webup-statusline/scripts/generate.mjs b/skills/webup-statusline/scripts/generate.mjs
index 8fd107b..23c3cbd 100644
--- a/skills/webup-statusline/scripts/generate.mjs
+++ b/skills/webup-statusline/scripts/generate.mjs
@@ -159,6 +159,25 @@ function buildScript() {
   p(`# Claude Code status line — ${t.name} theme`)
   p(`# Generated by webup-statusline skill`)
   p('')
+
+  // Auto-detect jq on Windows (WinGet/scoop paths may not be on PATH)
+  const jqPathBlock = [
+    '# Ensure jq is available (Windows: WinGet/scoop installs may not be on PATH)',
+    'if ! command -v jq >/dev/null 2>&1; then',
+    '  for _jq_dir in \\',
+    '    "/c/Users/$USERNAME/AppData/Local/Microsoft/WinGet/Links" \\',
+    '    "/c/Users/$USERNAME/AppData/Local/Microsoft/WinGet/Packages/jqlang.jq_Microsoft.Winget.Source_8wekyb3d8bbwe" \\',
+    '    "$HOME/scoop/shims" \\',
+    '  ; do',
+    '    if [ -d "$_jq_dir" ] && { [ -x "$_jq_dir/jq" ] || [ -x "$_jq_dir/jq.exe" ]; }; then',
+    '      export PATH="$PATH:$_jq_dir"',
+    '      break',
+    '    fi',
+    '  done',
+    'fi',
+  ]
+  for (const line of jqPathBlock) p(line)
+
   p('# Colors')
   p("readonly RST='\\033[0m'")
   p(`readonly C_MODEL='${t.model}'`)