diff --git a/src/cli.ts b/src/cli.ts
index 9158e5f5..99b1250a 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -57,20 +57,6 @@ program
   .option('--enrich', 'Enable LLM enrichment (requires ANTHROPIC_API_KEY)')
   .action((options) => extractCommand(options, logger));
 
-// Deprecated alias — will be removed in a future version
-program
-  .command('liberate')
-  .description('Deprecated: use "extract" instead')
-  .option('--since <date>', 'Start date (default: 90 days ago)')
-  .option('--commit-count <n>', 'Max commits to process')
-  .option('--dry-run', 'Preview without writing')
-  .option('--threshold <n>', 'Interest score threshold', '3')
-  .option('--enrich', 'Enable LLM enrichment (requires ANTHROPIC_API_KEY)')
-  .action((options) => {
-    console.warn('Warning: "liberate" is deprecated, use "extract" instead.');
-    return extractCommand(options, logger);
-  });
-
 program
   .command('context')
   .description('Show memories relevant to staged changes')
diff --git a/src/commands/init-hooks.ts b/src/commands/init-hooks.ts
index 8715cff3..3dd0f708 100644
--- a/src/commands/init-hooks.ts
+++ b/src/commands/init-hooks.ts
@@ -109,16 +109,6 @@ export function deepMergeGitMemConfig(
   const existingHooks = (existing.hooks ?? {}) as Record<string, unknown>;
   const defaultHooks = (defaults.hooks ?? {}) as Record<string, unknown>;
 
-  // Backward compat: migrate autoLiberate → autoExtract in sessionStop
-  const existingStop = existingHooks.sessionStop;
-  if (typeof existingStop === 'object' && existingStop !== null && !Array.isArray(existingStop)) {
-    const stop = existingStop as Record<string, unknown>;
-    if (stop.autoExtract === undefined && stop.autoLiberate !== undefined) {
-      stop.autoExtract = stop.autoLiberate;
-      delete stop.autoLiberate;
-    }
-  }
-
   const mergedHooks: Record<string, unknown> = {};
 
   // Merge each default key
diff --git a/src/domain/types/IMemoryQuality.ts b/src/domain/types/IMemoryQuality.ts
index 94a7dc28..a8d18a52 100644
--- a/src/domain/types/IMemoryQuality.ts
+++ b/src/domain/types/IMemoryQuality.ts
@@ -16,7 +16,6 @@
  * - commit-trailer: Extracted from AI-* commit trailers
  * - git-note: Stored in refs/notes/mem
  * - extract: Generated by extracting knowledge from existing history
- * - liberate: @deprecated Alias for 'extract' (backward compat)
  * - heuristic-extraction: Pattern-matched from commit messages
  */
 
@@ -55,7 +54,6 @@ export type SourceType =
   | 'commit-trailer'
   | 'git-note'
   | 'extract'
-  | 'liberate'  // @deprecated — kept for backward compat with existing memories
   | 'heuristic-extraction'
   | 'llm-enrichment';
 
@@ -67,7 +65,6 @@ export const SOURCE_VALUES: readonly SourceType[] = [
   'commit-trailer',
   'git-note',
   'extract',
-  'liberate',  // @deprecated — kept for backward compat
   'heuristic-extraction',
   'llm-enrichment',
 ] as const;
@@ -80,7 +77,6 @@ export const DEFAULT_CONFIDENCE: Readonly<Record<SourceType, ConfidenceLevel>> =
   'commit-trailer': 'high',
   'git-note': 'high',
   'extract': 'medium',
-  'liberate': 'medium',  // @deprecated — kept for backward compat
   'heuristic-extraction': 'low',
   'llm-enrichment': 'medium',
 };
diff --git a/src/hooks/utils/config.ts b/src/hooks/utils/config.ts
index 512e2569..b912b947 100644
--- a/src/hooks/utils/config.ts
+++ b/src/hooks/utils/config.ts
@@ -31,12 +31,7 @@ export function loadHookConfig(cwd?: string): IHookConfig {
     const raw = JSON.parse(readFileSync(configPath, 'utf8')) as Record<string, unknown>;
     const rawHooks = (raw.hooks ?? {}) as Partial<IHooksConfig>;
 
-    // Backward compat: migrate autoLiberate → autoExtract
     const rawStop = (rawHooks.sessionStop ?? {}) as Record<string, unknown>;
-    if (rawStop.autoExtract === undefined && rawStop.autoLiberate !== undefined) {
-      rawStop.autoExtract = rawStop.autoLiberate;
-      delete rawStop.autoLiberate;
-    }
 
     return {
       hooks: {
diff --git a/tests/unit/commands/init-hooks.test.ts b/tests/unit/commands/init-hooks.test.ts
index cf3fbaf1..c9cb1d49 100644
--- a/tests/unit/commands/init-hooks.test.ts
+++ b/tests/unit/commands/init-hooks.test.ts
@@ -342,36 +342,6 @@ describe('deepMergeGitMemConfig', () => {
     assert.equal(sessionStart.memoryLimit, 20); // Default fills in
   });
 
-  it('should migrate autoLiberate to autoExtract in existing config', () => {
-    const existing = {
-      hooks: {
-        sessionStop: { enabled: true, autoLiberate: true, threshold: 5 },
-      },
-    };
-
-    const result = deepMergeGitMemConfig(existing, defaults);
-    const hooks = result.hooks as Record<string, unknown>;
-    const sessionStop = hooks.sessionStop as Record<string, unknown>;
-
-    assert.equal(sessionStop.autoExtract, true);
-    assert.equal(sessionStop.autoLiberate, undefined); // Migrated away
-    assert.equal(sessionStop.threshold, 5);
-  });
-
-  it('should not override explicit autoExtract with autoLiberate', () => {
-    const existing = {
-      hooks: {
-        sessionStop: { enabled: true, autoExtract: false, autoLiberate: true },
-      },
-    };
-
-    const result = deepMergeGitMemConfig(existing, defaults);
-    const hooks = result.hooks as Record<string, unknown>;
-    const sessionStop = hooks.sessionStop as Record<string, unknown>;
-
-    assert.equal(sessionStop.autoExtract, false); // Explicit autoExtract wins
-  });
-
   it('should deep-merge sub-objects keeping user values over defaults', () => {
     const existing = {
       hooks: {
diff --git a/tests/unit/hooks/utils/config.test.ts b/tests/unit/hooks/utils/config.test.ts
index 77c1bba6..84b02379 100644
--- a/tests/unit/hooks/utils/config.test.ts
+++ b/tests/unit/hooks/utils/config.test.ts
@@ -89,34 +89,6 @@ describe('loadHookConfig', () => {
     assert.equal(config.hooks.enabled, false);
   });
 
-  it('should migrate autoLiberate to autoExtract for backward compat', () => {
-    const testDir = createTestDir();
-    writeFileSync(join(testDir, '.git-mem.json'), JSON.stringify({
-      hooks: {
-        sessionStop: { enabled: true, autoLiberate: true, threshold: 5 },
-      },
-    }));
-
-    const config = loadHookConfig(testDir);
-
-    assert.equal(config.hooks.sessionStop.autoExtract, true);
-    assert.equal(config.hooks.sessionStop.threshold, 5);
-  });
-
-  it('should prefer autoExtract over autoLiberate when both present', () => {
-    const testDir = createTestDir();
-    writeFileSync(join(testDir, '.git-mem.json'), JSON.stringify({
-      hooks: {
-        sessionStop: { enabled: true, autoExtract: false, autoLiberate: true },
-      },
-    }));
-
-    const config = loadHookConfig(testDir);
-
-    // autoExtract is explicit — should not be overridden by autoLiberate
-    assert.equal(config.hooks.sessionStop.autoExtract, false);
-  });
-
   it('should use process.cwd() when no cwd provided', () => {
     // This should not throw — just returns defaults if no .git-mem.json
     const config = loadHookConfig();