diff --git a/.claude-plugin/plugin.json b/.claude-plugin/plugin.json
index 757baae..18d9382 100644
--- a/.claude-plugin/plugin.json
+++ b/.claude-plugin/plugin.json
@@ -5,5 +5,6 @@
   "author": {
     "name": "Dietrich Gebert",
     "url": "https://github.com/DietrichGebert"
-  }
+  },
+  "hooks": "./hooks/claude-codex-hooks.json"
 }
diff --git a/.codex-plugin/plugin.json b/.codex-plugin/plugin.json
index 3595c65..dad3120 100644
--- a/.codex-plugin/plugin.json
+++ b/.codex-plugin/plugin.json
@@ -11,6 +11,7 @@
   "license": "MIT",
   "keywords": ["yagni", "minimalism", "code-review", "productivity"],
   "skills": "./skills/",
+  "hooks": "./hooks/claude-codex-hooks.json",
   "interface": {
     "displayName": "Ponytail",
     "shortDescription": "Lazy senior developer mode",
diff --git a/README.md b/README.md
index 7aad189..1c95619 100644
--- a/README.md
+++ b/README.md
@@ -163,6 +163,7 @@ gemini extensions install https://github.com/DietrichGebert/ponytail
 ```
 
 Loads the ruleset as always-on context every session and registers the `/ponytail` commands; the `skills/` ship too, activated when a task needs them.
+The Gemini adapter intentionally does not ship a root `hooks/hooks.json`: Gemini auto-loads that path, while Ponytail's lifecycle hooks use Claude/Codex event names.
 
 ### Antigravity CLI
 
diff --git a/docs/agent-portability.md b/docs/agent-portability.md
index 5f965f5..cd01805 100644
--- a/docs/agent-portability.md
+++ b/docs/agent-portability.md
@@ -8,11 +8,11 @@ to load in a given agent.
 
 | Host | Files | Notes |
 |------|-------|-------|
-| Claude Code | `.claude-plugin/`, `commands/`, `hooks/` | Full plugin install with session activation, mode tracking, commands, and statusline support. |
-| Codex | `.codex-plugin/plugin.json`, `hooks/hooks.json`, `hooks/`, `skills/` | Plugin install with the same skills plus lifecycle hooks for activation and mode tracking. |
+| Claude Code | `.claude-plugin/plugin.json`, `commands/`, `hooks/claude-codex-hooks.json`, `hooks/` | Full plugin install with session activation, mode tracking, commands, and statusline support. |
+| Codex | `.codex-plugin/plugin.json`, `hooks/claude-codex-hooks.json`, `hooks/`, `skills/` | Plugin install with the same skills plus lifecycle hooks for activation and mode tracking. |
 | OpenCode | `.opencode/plugins/ponytail.mjs`, `.opencode/command/`, `hooks/`, `skills/` | Server plugin injects the ruleset each turn via `experimental.chat.system.transform` and persists `/ponytail` switches; reuses the shared instruction builder. |
 | pi | `pi-extension/`, `skills/`, `hooks/` | Package extension: injects the ruleset each turn through the shared instruction builder and registers the `/ponytail` commands. |
-| Gemini CLI | `gemini-extension.json`, `AGENTS.md`, `commands/`, `skills/` | Extension manifest points `contextFileName` at `AGENTS.md` for always-on rules, and reuses the existing `commands/*.toml` and `skills/`, which Gemini CLI auto-discovers. |
+| Gemini CLI | `gemini-extension.json`, `AGENTS.md`, `commands/`, `skills/` | Extension manifest points `contextFileName` at `AGENTS.md` for always-on rules, and reuses the existing `commands/*.toml` and `skills/`, which Gemini CLI auto-discovers. The Claude/Codex hook map is not placed at Gemini's auto-discovered `hooks/hooks.json` path. |
 | Cursor | `.cursor/rules/ponytail.mdc` | Always-on project rule. |
 | Windsurf | `.windsurf/rules/ponytail.md` | Project rule. |
 | Cline | `.clinerules/ponytail.md` | Project rule. |
diff --git a/hooks/hooks.json b/hooks/claude-codex-hooks.json
similarity index 100%
rename from hooks/hooks.json
rename to hooks/claude-codex-hooks.json
diff --git a/tests/gemini-extension.test.js b/tests/gemini-extension.test.js
index 0f24338..db09661 100644
--- a/tests/gemini-extension.test.js
+++ b/tests/gemini-extension.test.js
@@ -25,6 +25,10 @@ const VERSIONED_MANIFESTS = [
 // Gemini auto-discovers these by directory; the manifest is only useful if they exist.
 const REUSED_COMMANDS = ['commands/ponytail.toml', 'commands/ponytail-review.toml'];
 const REUSED_SKILLS = ['skills/ponytail/SKILL.md'];
+// Gemini CLI auto-loads this exact path for extension hooks. Ponytail's
+// Claude/Codex hook map uses events Gemini does not support, so it must stay
+// behind the host-specific plugin manifests instead.
+const GEMINI_AUTO_HOOKS = 'hooks/hooks.json';
 // Same load-bearing phrases asserted by scripts/check-rule-copies.js: the file
 // contextFileName points at must actually carry the rules, not just exist.
 const RULE_INVARIANTS = [
@@ -77,3 +81,11 @@ test('the commands and skills the adapter reuses are present', () => {
     assert.ok(fs.existsSync(path.join(root, rel)), `reused file missing: ${rel}`);
   }
 });
+
+test('Gemini cannot auto-discover Claude/Codex hook events', () => {
+  assert.equal(
+    fs.existsSync(path.join(root, GEMINI_AUTO_HOOKS)),
+    false,
+    `${GEMINI_AUTO_HOOKS} is auto-loaded by Gemini CLI; keep Claude/Codex hooks on manifest paths`,
+  );
+});
diff --git a/tests/hooks-windows.test.js b/tests/hooks-windows.test.js
index f7b5353..b72f357 100644
--- a/tests/hooks-windows.test.js
+++ b/tests/hooks-windows.test.js
@@ -11,7 +11,11 @@ const fs = require('fs');
 const path = require('path');
 
 const root = path.join(__dirname, '..');
-const HOOKS_JSON = 'hooks/hooks.json';
+const HOOKS_JSON = 'hooks/claude-codex-hooks.json';
+const HOST_PLUGIN_MANIFESTS = [
+  '.claude-plugin/plugin.json',
+  '.codex-plugin/plugin.json',
+];
 // cmd.exe variable syntax (%FOO%); PowerShell leaves it literal, breaking the path.
 const CMD_VAR_SYNTAX = /%[A-Za-z_][A-Za-z0-9_]*%/;
 // Pull the hooks/<script> a command launches, so we can check it exists.
@@ -46,3 +50,10 @@ test('every hook command points at a script that ships in hooks/', () => {
     }
   }
 });
+
+test('Claude and Codex manifests point at the shared host-specific hook config', () => {
+  for (const rel of HOST_PLUGIN_MANIFESTS) {
+    const manifest = JSON.parse(fs.readFileSync(path.join(root, rel), 'utf8'));
+    assert.equal(manifest.hooks, `./${HOOKS_JSON}`, `${rel} must not rely on root hooks auto-discovery`);
+  }
+});