diff --git a/hooks/ponytail-config.js b/hooks/ponytail-config.js
index 5d5e1262a..c2864e500 100644
--- a/hooks/ponytail-config.js
+++ b/hooks/ponytail-config.js
@@ -73,6 +73,10 @@ function getClaudeDir() {
   return process.env.CLAUDE_CONFIG_DIR || path.join(os.homedir(), '.claude');
 }
 
+function getQoderDir() {
+  return process.env.QODER_CONFIG_DIR || path.join(os.homedir(), '.qoder');
+}
+
 function getDefaultMode() {
   // 1. Environment variable (highest priority)
   // ponytail: a default must be a runtime level (off/lite/full/ultra); review is
@@ -159,6 +163,7 @@ module.exports = {
   getConfigDir,
   getConfigPath,
   getClaudeDir,
+  getQoderDir,
   getHideStatus,
   getQuietStartup,
   isShellSafe,
diff --git a/hooks/ponytail-runtime.js b/hooks/ponytail-runtime.js
index b4643eb7e..27e9ceee8 100644
--- a/hooks/ponytail-runtime.js
+++ b/hooks/ponytail-runtime.js
@@ -2,7 +2,7 @@ const fs = require('fs');
 const path = require('path');
 const os = require('os');
 const { createHash } = require('crypto');
-const { getClaudeDir, getConfigDir } = require('./ponytail-config');
+const { getClaudeDir, getQoderDir } = require('./ponytail-config');
 
 const STATE_FILE = '.ponytail-active';
 
@@ -37,7 +37,7 @@ if (isCodex) stateDir = process.env.PLUGIN_DATA;
 // COPILOT_PLUGIN_DATA is unset under VS Code Copilot, so fall back to
 // getClaudeDir() rather than building a path from undefined.
 if (isCopilot) stateDir = process.env.COPILOT_PLUGIN_DATA || getClaudeDir();
-if (isQoder) stateDir = path.join(os.homedir(), '.qoder');
+if (isQoder) stateDir = getQoderDir();
 if (isCodeBuddy) stateDir = process.env.CODEBUDDY_CONFIG_DIR || path.join(os.homedir(), '.codebuddy');
 if (isCursor) stateDir = path.join(os.homedir(), '.cursor');
 
diff --git a/scripts/uninstall.js b/scripts/uninstall.js
index 92c7a74ee..d67e92fdc 100644
--- a/scripts/uninstall.js
+++ b/scripts/uninstall.js
@@ -9,7 +9,7 @@
 const fs = require('fs');
 const os = require('os');
 const path = require('path');
-const { getConfigPath, getClaudeDir } = require('../hooks/ponytail-config');
+const { getConfigPath, getClaudeDir, getQoderDir } = require('../hooks/ponytail-config');
 const cursorHooks = require('./cursor-hooks');
 
 const STATUSLINE_SCRIPT = /(?:^|[\s"'\\/])ponytail-statusline\.(?:sh|ps1)(?=$|[\s"'])/;
@@ -26,7 +26,7 @@ function removeIfExists(filePath, label) {
 removeIfExists(path.join(getClaudeDir(), '.ponytail-active'), 'mode flag');
 removeIfExists(path.join(getClaudeDir(), '.ponytail-statusline-nudged'), 'statusline nudge flag');
 removeIfExists(path.join(os.homedir(), '.cursor', '.ponytail-active'), 'Cursor mode flag');
-removeIfExists(path.join(os.homedir(), '.qoder', '.ponytail-active'), 'Qoder mode flag');
+removeIfExists(path.join(getQoderDir(), '.ponytail-active'), 'Qoder mode flag');
 for (const dir of [path.join(getClaudeDir(), 'ponytail-modes'), path.join(os.homedir(), '.cursor', 'ponytail-modes'), path.join(process.env.CODEBUDDY_CONFIG_DIR || path.join(os.homedir(), '.codebuddy'), 'ponytail-modes')]) {
   if (fs.existsSync(dir)) {
     fs.rmSync(dir, { recursive: true });
diff --git a/tests/hooks.test.js b/tests/hooks.test.js
index 974ea3092..45b1b089a 100644
--- a/tests/hooks.test.js
+++ b/tests/hooks.test.js
@@ -591,6 +591,19 @@ assert.match(
   /PONYTAIL MODE ACTIVE — level: full/,
 );
 
+// Qoder's QODER_CONFIG_DIR relocates its user state. Mode switches and
+// subagent injection must use that location instead of creating ~/.qoder.
+const qoderCustomDir = path.join(temp, 'qoder-custom-config');
+const qoderCustomEnv = { ...qoderEnv, QODER_CONFIG_DIR: qoderCustomDir };
+const qoderCustomState = path.join(qoderCustomDir, '.ponytail-active');
+result = run('ponytail-mode-tracker.js', qoderCustomEnv, JSON.stringify({ prompt: '/ponytail ultra' }));
+assert.equal(result.status, 0, result.stderr);
+assert.equal(fs.readFileSync(qoderCustomState, 'utf8'), 'ultra');
+assert.equal(fs.readFileSync(qoderState, 'utf8'), 'full', 'custom Qoder mode must not change ~/.qoder');
+result = run('ponytail-subagent.js', qoderCustomEnv);
+assert.equal(result.status, 0, result.stderr);
+assert.match(JSON.parse(result.stdout).hookSpecificOutput.additionalContext, /PONYTAIL MODE ACTIVE — level: ultra/);
+
 // Bare `/ponytail` on Qoder is report-only: there's no SessionStart, so the
 // double-duty block below emits the full ruleset as the report. A second
 // confirmation here would push two JSON objects to stdout. The point is that
diff --git a/tests/uninstall.test.js b/tests/uninstall.test.js
index 20c0be54f..f4620ad66 100644
--- a/tests/uninstall.test.js
+++ b/tests/uninstall.test.js
@@ -32,6 +32,10 @@ fs.writeFileSync(flagPath, 'full');
 const qoderFlagPath = path.join(home, '.qoder', '.ponytail-active');
 fs.mkdirSync(path.dirname(qoderFlagPath), { recursive: true });
 fs.writeFileSync(qoderFlagPath, 'ultra');
+const qoderCustomDir = path.join(temp, 'qoder-custom-config');
+const qoderCustomFlagPath = path.join(qoderCustomDir, '.ponytail-active');
+fs.mkdirSync(qoderCustomDir, { recursive: true });
+fs.writeFileSync(qoderCustomFlagPath, 'lite');
 
 const nudgeFlagPath = path.join(claudeDir, '.ponytail-statusline-nudged');
 fs.writeFileSync(nudgeFlagPath, '');
@@ -80,6 +84,7 @@ let result = runUninstall(env);
 assert.equal(result.status, 0, result.stderr);
 assert.equal(fs.existsSync(flagPath), false, 'mode flag must be removed');
 assert.equal(fs.existsSync(qoderFlagPath), false, 'Qoder mode flag must be removed');
+assert.equal(fs.existsSync(qoderCustomFlagPath), true, 'default Qoder uninstall must not touch a separate custom config');
 assert.equal(fs.existsSync(nudgeFlagPath), false, 'statusline nudge flag must be removed');
 assert.equal(fs.existsSync(configPath), false, 'config file must be removed');
 assert.equal(fs.existsSync(cursorFlagPath), false, 'Cursor mode flag must be removed');
@@ -141,6 +146,10 @@ assert.equal(
   'a combined statusLine must keep the non-ponytail command',
 );
 
+result = runUninstall({ ...env, QODER_CONFIG_DIR: qoderCustomDir });
+assert.equal(result.status, 0, result.stderr);
+assert.equal(fs.existsSync(qoderCustomFlagPath), false, 'Qoder custom config mode flag must be removed');
+
 // #434: a malformed settings.json must not crash the script mid-cleanup. It
 // can't be safely edited, so uninstall warns and leaves the file byte-for-byte
 // intact instead of throwing a SyntaxError after other state was already removed.