feat: add JoyCode install target

README.md

@@ -1083,6 +1083,7 @@ Yes. ECC is cross-platform:
 - **OpenCode**: Full plugin support in `.opencode/`. See [OpenCode Support](#opencode-support).
 - **Codex**: First-class support for both macOS app and CLI, with adapter drift guards and SessionStart fallback. See PR [#257](https://github.com/affaan-m/everything-claude-code/pull/257).
 - **Antigravity**: Tightly integrated setup for workflows, skills, and flattened rules in `.agent/`. See [Antigravity Guide](docs/ANTIGRAVITY-GUIDE.md).
+- **JoyCode / CodeBuddy**: Project-local selective install adapters for commands, agents, skills, and flattened rules. See [JoyCode Adapter Guide](docs/JOYCODE-GUIDE.md).
 - **Non-native harnesses**: Manual fallback path for Grok and similar interfaces. See [Manual Adaptation Guide](docs/MANUAL-ADAPTATION-GUIDE.md).
 - **Claude Code**: Native — this is the primary target.
 </details>

docs/JOYCODE-GUIDE.md

@@ -0,0 +1,55 @@
+# JoyCode Adapter Guide
+
+JoyCode can consume ECC through the selective installer. The adapter installs shared ECC commands, agents, skills, and flattened rules into a project-local `.joycode/` directory.
+
+## Install
+
+Preview the install plan:
+
+```bash
+node scripts/install-plan.js --target joycode --profile full
+```
+
+Apply it to the current project:
+
+```bash
+node scripts/install-apply.js --target joycode --profile full
+```
+
+For a smaller install, select modules explicitly:
+
+```bash
+node scripts/install-apply.js --target joycode --modules rules-core,commands-core,workflow-quality
+```
+
+## Layout
+
+The project adapter writes managed files under:
+
+```text
+.joycode/
+  agents/
+  commands/
+  rules/
+  skills/
+  mcp-configs/
+  scripts/
+  ecc-install-state.json
+```
+
+Rules are flattened into namespaced filenames so a JoyCode project does not receive nested rule directories such as `rules/common/coding-style.md`. Commands, agents, and skills keep the same structure they use elsewhere in ECC.
+The full profile also includes shared MCP and setup helper files that other ECC project-local adapters use.
+
+## Uninstall
+
+Use ECC's managed uninstall path instead of deleting files by hand:
+
+```bash
+node scripts/uninstall.js --target joycode
+```
+
+The uninstall command reads `.joycode/ecc-install-state.json` and removes only files that ECC installed. User-created JoyCode files are preserved.
+
+## Source PR
+
+This adapter salvages the useful project-local JoyCode intent from stale PR #1429 while replacing the standalone shell installer with ECC's current install-state and uninstall machinery.

manifests/install-modules.json

@@ -12,7 +12,8 @@
         "claude",
         "cursor",
         "antigravity",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [],
       "defaultInstall": true,
@@ -33,7 +34,8 @@
         "cursor",
         "antigravity",
         "codex",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [],
       "defaultInstall": true,
@@ -52,7 +54,8 @@
         "cursor",
         "antigravity",
         "opencode",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [],
       "defaultInstall": true,
@@ -100,7 +103,8 @@
         "codex",
         "gemini",
         "opencode",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [],
       "defaultInstall": true,
@@ -159,7 +163,8 @@
         "antigravity",
         "codex",
         "opencode",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [
         "rules-core",
@@ -188,7 +193,8 @@
         "antigravity",
         "codex",
         "opencode",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [
         "platform-configs"
@@ -227,7 +233,8 @@
         "antigravity",
         "codex",
         "opencode",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [
         "platform-configs"
@@ -262,7 +269,8 @@
         "antigravity",
         "codex",
         "opencode",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [
         "workflow-quality"
@@ -289,7 +297,8 @@
         "antigravity",
         "codex",
         "opencode",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [
         "platform-configs"
@@ -320,7 +329,8 @@
         "antigravity",
         "codex",
         "opencode",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [
         "platform-configs"
@@ -358,7 +368,8 @@
         "antigravity",
         "codex",
         "opencode",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [
         "platform-configs"
@@ -381,7 +392,8 @@
         "antigravity",
         "codex",
         "opencode",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [
         "business-content"
@@ -407,7 +419,8 @@
         "cursor",
         "codex",
         "opencode",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [
         "platform-configs"
@@ -461,7 +474,8 @@
         "antigravity",
         "codex",
         "opencode",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [
         "platform-configs"
@@ -500,7 +514,8 @@
         "antigravity",
         "codex",
         "opencode",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [
         "platform-configs"
@@ -529,7 +544,8 @@
         "antigravity",
         "codex",
         "opencode",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [
         "platform-configs"
@@ -558,7 +574,8 @@
         "antigravity",
         "codex",
         "opencode",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [
         "platform-configs"
@@ -581,7 +598,8 @@
         "antigravity",
         "codex",
         "opencode",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ],
       "dependencies": [
         "platform-configs"

schemas/ecc-install-config.schema.json

@@ -24,7 +24,8 @@
         "codex",
         "gemini",
         "opencode",
-        "codebuddy"
+        "codebuddy",
+        "joycode"
       ]
     },
     "profile": {

schemas/install-modules.schema.json

@@ -53,7 +53,8 @@
                 "codex",
                 "gemini",
                 "opencode",
-                "codebuddy"
+                "codebuddy",
+                "joycode"
               ]
             }
           },

scripts/install-apply.js

@@ -31,6 +31,11 @@ Targets:
   claude       (default) - Install ECC into ~/.claude/ with managed rules/skills under rules/ecc and skills/ecc
   cursor       - Install rules, hooks, and bundled Cursor configs to ./.cursor/
   antigravity  - Install rules, workflows, skills, and agents to ./.agent/
+  codex        - Install shared agents/config into ~/.codex/
+  gemini       - Install project-local Gemini config into ./.gemini/
+  opencode     - Install shared commands/hooks/config into ~/.opencode/
+  codebuddy    - Install commands, agents, skills, and flattened rules into ./.codebuddy/
+  joycode      - Install commands, agents, skills, and flattened rules into ./.joycode/
 
 Options:
   --profile <name>    Resolve and install a manifest profile

scripts/lib/install-manifests.js

@@ -4,7 +4,7 @@ const path = require('path');
 const { getInstallTargetAdapter, planInstallTargetScaffold } = require('./install-targets/registry');
 
 const DEFAULT_REPO_ROOT = path.join(__dirname, '../..');
-const SUPPORTED_INSTALL_TARGETS = ['claude', 'cursor', 'antigravity', 'codex', 'gemini', 'opencode', 'codebuddy'];
+const SUPPORTED_INSTALL_TARGETS = ['claude', 'cursor', 'antigravity', 'codex', 'gemini', 'opencode', 'codebuddy', 'joycode'];
 const COMPONENT_FAMILY_PREFIXES = {
   baseline: 'baseline:',
   language: 'lang:',

scripts/lib/install-targets/helpers.js

@@ -7,6 +7,7 @@ const PLATFORM_SOURCE_PATH_OWNERS = Object.freeze({
   '.codex': 'codex',
   '.cursor': 'cursor',
   '.gemini': 'gemini',
+  '.joycode': 'joycode',
   '.opencode': 'opencode',
   '.codebuddy': 'codebuddy',
 });

scripts/lib/install-targets/joycode-project.js

@@ -0,0 +1,50 @@
+const path = require('path');
+
+const {
+  createFlatRuleOperations,
+  createInstallTargetAdapter,
+  isForeignPlatformPath,
+} = require('./helpers');
+
+module.exports = createInstallTargetAdapter({
+  id: 'joycode-project',
+  target: 'joycode',
+  kind: 'project',
+  rootSegments: ['.joycode'],
+  installStatePathSegments: ['ecc-install-state.json'],
+  nativeRootRelativePath: '.joycode',
+  planOperations(input, adapter) {
+    const modules = Array.isArray(input.modules)
+      ? input.modules
+      : (input.module ? [input.module] : []);
+    const {
+      repoRoot,
+      projectRoot,
+      homeDir,
+    } = input;
+    const planningInput = {
+      repoRoot,
+      projectRoot,
+      homeDir,
+    };
+    const targetRoot = adapter.resolveRoot(planningInput);
+
+    return modules.flatMap(module => {
+      const paths = Array.isArray(module.paths) ? module.paths : [];
+      return paths
+        .filter(p => !isForeignPlatformPath(p, adapter.target))
+        .flatMap(sourceRelativePath => {
+          if (sourceRelativePath === 'rules') {
+            return createFlatRuleOperations({
+              moduleId: module.id,
+              repoRoot,
+              sourceRelativePath,
+              destinationDir: path.join(targetRoot, 'rules'),
+            });
+          }
+
+          return [adapter.createScaffoldOperation(module.id, sourceRelativePath, planningInput)];
+        });
+    });
+  },
+});

scripts/lib/install-targets/registry.js

@@ -4,6 +4,7 @@ const codebuddyProject = require('./codebuddy-project');
 const codexHome = require('./codex-home');
 const cursorProject = require('./cursor-project');
 const geminiProject = require('./gemini-project');
+const joycodeProject = require('./joycode-project');
 const opencodeHome = require('./opencode-home');
 
 const ADAPTERS = Object.freeze([
@@ -14,6 +15,7 @@ const ADAPTERS = Object.freeze([
   geminiProject,
   opencodeHome,
   codebuddyProject,
+  joycodeProject,
 ]);
 
 function listInstallTargetAdapters() {

tests/lib/install-targets.test.js

@@ -43,6 +43,7 @@ function runTests() {
     assert.ok(targets.includes('gemini'), 'Should include gemini target');
     assert.ok(targets.includes('opencode'), 'Should include opencode target');
     assert.ok(targets.includes('codebuddy'), 'Should include codebuddy target');
+    assert.ok(targets.includes('joycode'), 'Should include joycode target');
   })) passed++; else failed++;
 
   if (test('resolves cursor adapter root and install-state path from project root', () => {
@@ -501,6 +502,29 @@ function runTests() {
     assert.ok(byTarget.supports('codebuddy-project'));
   })) passed++; else failed++;
 
+  if (test('resolves joycode adapter root and install-state path from project root', () => {
+    const adapter = getInstallTargetAdapter('joycode');
+    const projectRoot = '/workspace/app';
+    const root = adapter.resolveRoot({ projectRoot });
+    const statePath = adapter.getInstallStatePath({ projectRoot });
+
+    assert.strictEqual(adapter.id, 'joycode-project');
+    assert.strictEqual(adapter.target, 'joycode');
+    assert.strictEqual(adapter.kind, 'project');
+    assert.strictEqual(root, path.join(projectRoot, '.joycode'));
+    assert.strictEqual(statePath, path.join(projectRoot, '.joycode', 'ecc-install-state.json'));
+  })) passed++; else failed++;
+
+  if (test('joycode adapter supports lookup by target and adapter id', () => {
+    const byTarget = getInstallTargetAdapter('joycode');
+    const byId = getInstallTargetAdapter('joycode-project');
+
+    assert.strictEqual(byTarget.id, 'joycode-project');
+    assert.strictEqual(byId.id, 'joycode-project');
+    assert.ok(byTarget.supports('joycode'));
+    assert.ok(byTarget.supports('joycode-project'));
+  })) passed++; else failed++;
+
   if (test('plans codebuddy rules with flat namespaced filenames', () => {
     const repoRoot = path.join(__dirname, '..', '..');
     const projectRoot = '/workspace/app';
@@ -536,6 +560,68 @@ function runTests() {
     );
   })) passed++; else failed++;
 
+  if (test('plans joycode commands, agents, skills, and flattened rules', () => {
+    const repoRoot = path.join(__dirname, '..', '..');
+    const projectRoot = '/workspace/app';
+
+    const plan = planInstallTargetScaffold({
+      target: 'joycode',
+      repoRoot,
+      projectRoot,
+      modules: [
+        {
+          id: 'rules-core',
+          paths: ['rules'],
+        },
+        {
+          id: 'agents-core',
+          paths: ['agents'],
+        },
+        {
+          id: 'commands-core',
+          paths: ['commands'],
+        },
+        {
+          id: 'workflow-quality',
+          paths: ['skills/tdd-workflow'],
+        },
+      ],
+    });
+
+    assert.strictEqual(plan.adapter.id, 'joycode-project');
+    assert.strictEqual(plan.targetRoot, path.join(projectRoot, '.joycode'));
+    assert.strictEqual(plan.installStatePath, path.join(projectRoot, '.joycode', 'ecc-install-state.json'));
+
+    assert.ok(
+      plan.operations.some(operation => (
+        normalizedRelativePath(operation.sourceRelativePath) === 'rules/common/coding-style.md'
+        && operation.destinationPath === path.join(projectRoot, '.joycode', 'rules', 'common-coding-style.md')
+      )),
+      'Should flatten common rules into namespaced files for joycode'
+    );
+    assert.ok(
+      plan.operations.some(operation => (
+        normalizedRelativePath(operation.sourceRelativePath) === 'agents'
+        && operation.destinationPath === path.join(projectRoot, '.joycode', 'agents')
+      )),
+      'Should install agents under .joycode/agents'
+    );
+    assert.ok(
+      plan.operations.some(operation => (
+        normalizedRelativePath(operation.sourceRelativePath) === 'commands'
+        && operation.destinationPath === path.join(projectRoot, '.joycode', 'commands')
+      )),
+      'Should install commands under .joycode/commands'
+    );
+    assert.ok(
+      plan.operations.some(operation => (
+        normalizedRelativePath(operation.sourceRelativePath) === 'skills/tdd-workflow'
+        && operation.destinationPath === path.join(projectRoot, '.joycode', 'skills', 'tdd-workflow')
+      )),
+      'Should install skills under .joycode/skills'
+    );
+  })) passed++; else failed++;
+
   if (test('exposes validate and planOperations on codebuddy adapter', () => {
     const codebuddyAdapter = getInstallTargetAdapter('codebuddy');
 

tests/scripts/install-apply.test.js

@@ -233,6 +233,40 @@ function runTests() {
     }
   })) passed++; else failed++;
 
+  if (test('installs JoyCode profile through managed install-state', () => {
+    const homeDir = createTempDir('install-apply-home-');
+    const projectDir = createTempDir('install-apply-project-');
+
+    try {
+      const result = run(['--target', 'joycode', '--profile', 'minimal'], { cwd: projectDir, homeDir });
+      assert.strictEqual(result.code, 0, result.stderr);
+
+      assert.ok(fs.existsSync(path.join(projectDir, '.joycode', 'rules', 'common-coding-style.md')));
+      assert.ok(!fs.existsSync(path.join(projectDir, '.joycode', 'rules', 'common', 'coding-style.md')));
+      assert.ok(fs.existsSync(path.join(projectDir, '.joycode', 'agents', 'architect.md')));
+      assert.ok(fs.existsSync(path.join(projectDir, '.joycode', 'commands', 'plan.md')));
+      assert.ok(fs.existsSync(path.join(projectDir, '.joycode', 'skills', 'tdd-workflow', 'SKILL.md')));
+      assert.ok(fs.existsSync(path.join(projectDir, '.joycode', 'mcp-configs', 'mcp-servers.json')));
+      assert.ok(!fs.existsSync(path.join(projectDir, '.joycode', 'hooks')));
+
+      const statePath = path.join(projectDir, '.joycode', 'ecc-install-state.json');
+      const state = readJson(statePath);
+      assert.strictEqual(state.target.id, 'joycode-project');
+      assert.deepStrictEqual(state.request.modules, []);
+      assert.strictEqual(state.request.profile, 'minimal');
+      assert.ok(state.resolution.selectedModules.includes('workflow-quality'));
+      assert.ok(
+        state.operations.some(operation => (
+          operation.destinationPath.endsWith(path.join('.joycode', 'skills', 'tdd-workflow', 'SKILL.md'))
+        )),
+        'Should record JoyCode skill file operation'
+      );
+    } finally {
+      cleanup(homeDir);
+      cleanup(projectDir);
+    }
+  })) passed++; else failed++;
+
   if (test('supports dry-run without mutating the target project', () => {
     const homeDir = createTempDir('install-apply-home-');
     const projectDir = createTempDir('install-apply-project-');