diff --git a/src/databases/officer_db/src/chat-session-cleanup.ts b/src/databases/officer_db/src/chat-session-cleanup.ts
new file mode 100644
index 00000000..0f47daee
--- /dev/null
+++ b/src/databases/officer_db/src/chat-session-cleanup.ts
@@ -0,0 +1,42 @@
+import { inArray } from 'drizzle-orm';
+import { db } from './db';
+import { chatSessionEvents } from './chat-events/schema';
+import { chatNotificationPrefs } from './chat-notification-prefs/schema';
+import { chatSessionModels } from './chat-session-models/schema';
+import { nudges } from './nudges/schema';
+
+/*
+  Everything the platform stores ABOUT a conversation, forgotten together.
+
+  ── Why this exists as one function ──
+
+  Four tables are keyed on a transcript id and none of them has a foreign key to anything, because the thing
+  they describe is a FILE — a transcript on disk, written by the harness. There is no row for a chat session
+  to reference, so the database cannot cascade and the delete path has to be explicit.
+
+  It was not. Deleting a conversation removed the transcript and left all four behind, for ever. Found on
+  2026-08-22 by counting rows after two commanders were deleted through the UI: `chat_session_models` held 36
+  rows against far fewer live conversations.
+
+  ── Why it is more than untidy ──
+
+  Three of the four are inert — a model, a bell preference, a durable copy of turn output that nothing will
+  ask for again. `nudges` is not: it is a SCHEDULE, and the tick in `nudger.ts` reads it. A nudge left behind
+  by a deleted conversation is a timer that keeps firing at something that does not exist.
+
+  ── Why it takes a list ──
+
+  A `/clear` chain is several transcripts presenting as one conversation, and deleting it deletes every part.
+  Forgetting one id and leaving its siblings is the same bug at a smaller scale, so the caller passes the ids
+  it actually removed.
+*/
+export async function forgetChatSessions(sessionIds: string[]): Promise<void> {
+  if (!sessionIds.length) return;
+  // Sequential rather than a transaction: these are independent tables with no invariant between them, and
+  // a partial forget is strictly better than a failed delete that leaves the transcript gone and every row
+  // in place. Each is idempotent — running it twice removes nothing the second time.
+  await db.delete(nudges).where(inArray(nudges.sessionId, sessionIds));
+  await db.delete(chatSessionModels).where(inArray(chatSessionModels.sessionId, sessionIds));
+  await db.delete(chatNotificationPrefs).where(inArray(chatNotificationPrefs.sessionId, sessionIds));
+  await db.delete(chatSessionEvents).where(inArray(chatSessionEvents.sessionId, sessionIds));
+}
diff --git a/src/databases/officer_db/src/index.ts b/src/databases/officer_db/src/index.ts
index 5c0c7d0d..34e9a5e3 100644
--- a/src/databases/officer_db/src/index.ts
+++ b/src/databases/officer_db/src/index.ts
@@ -39,6 +39,7 @@ export * from './nudges';
 export * from './ai-provider-usage';
 export * from './anthropic-accounts';
 export * from './theme-favorites';
+export { forgetChatSessions } from './chat-session-cleanup';
 export * from './command-hq';
 export * from './dashboards';
 export * from './integrations';
diff --git a/src/servers/api/chat/chat.ts b/src/servers/api/chat/chat.ts
index 45c4459f..13eb167c 100644
--- a/src/servers/api/chat/chat.ts
+++ b/src/servers/api/chat/chat.ts
@@ -12,6 +12,7 @@ import {
   getChatNotifyPreference,
   getChatNotifyPreferences,
   setChatNotifyPreference,
+  forgetChatSessions,
 } from 'officerdb';
 import type { NotifyPreference } from 'officerdb/types';
 import { setNudge, getNudge, cancelNudge } from 'officerdb';
@@ -376,8 +377,21 @@ chatRouter.delete('/sessions/:id', async (ctx) => {
   const id = ctx.req.param('id');
   const cwd = cwdOf(ctx, who.home);
   if (isOpenCodeSessionId(id) && !who.isOwner) return ctx.text('Not found', 404);
-  const ok = isOpenCodeSessionId(id) ? await deleteOpenCodeSession(id) : deleteClaudeSession(who, cwd, id);
-  if (!ok) return ctx.text('Not found', 404);
+  if (isOpenCodeSessionId(id)) {
+    if (!(await deleteOpenCodeSession(id))) return ctx.text('Not found', 404);
+    return ctx.json({ ok: true });
+  }
+
+  // `.length`, not truthiness: this returns the IDS it removed and an empty array is truthy in JavaScript,
+  // so `if (removed)` would report a delete that found nothing as a success.
+  const removed = deleteClaudeSession(who, cwd, id);
+  if (!removed.length) return ctx.text('Not found', 404);
+
+  // The transcript is gone; forget what the platform stored ABOUT it. Four tables are keyed on a transcript
+  // id with no foreign key — there is no row for a conversation to reference — so nothing cascades and this
+  // has to be explicit. One of them, `nudges`, is a live schedule: left behind it keeps firing at a
+  // conversation that no longer exists.
+  await forgetChatSessions(removed);
   return ctx.json({ ok: true });
 });
 
diff --git a/src/servers/api/chat/claude-sessions.ts b/src/servers/api/chat/claude-sessions.ts
index 8ab6975e..dba70740 100644
--- a/src/servers/api/chat/claude-sessions.ts
+++ b/src/servers/api/chat/claude-sessions.ts
@@ -642,9 +642,12 @@ const findTranscript = (who: ChatIdentity, cwd: string, sessionId: string): stri
  * routinely (see `findTranscript`), and the wrong group would find no chain and silently delete one
  * part of several.
  */
-export function deleteClaudeSession(who: ChatIdentity, cwd: string, sessionId: string): boolean {
+export function deleteClaudeSession(who: ChatIdentity, cwd: string, sessionId: string): string[] {
   const filePath = findTranscript(who, cwd, sessionId);
-  if (!filePath) return false;
+  // The IDS it removed, not a boolean — empty means nothing was there. The caller needs them to forget the
+  // rows keyed on each one (`forgetChatSessions`), and a `/clear` chain is several transcripts presenting as
+  // one conversation: returning true would have told a caller to forget the head and orphan its parts.
+  if (!filePath) return [];
 
   const ownCwd = firstCwd(who.osUser, filePath);
   const ids = ownCwd ? chainFileIds(who, ownCwd, sessionId) : [sessionId];
@@ -653,7 +656,7 @@ export function deleteClaudeSession(who: ChatIdentity, cwd: string, sessionId: s
   // success — the conversation reappeared on the next refresh.
   const dir = dirname(filePath);
   for (const id of ids) removeAs(who.osUser, join(dir, `${id}.jsonl`));
-  return true;
+  return ids;
 }
 
 /**
diff --git a/src/servers/api/chat/websocket.ts b/src/servers/api/chat/websocket.ts
index 2f672ee3..e4e39539 100644
--- a/src/servers/api/chat/websocket.ts
+++ b/src/servers/api/chat/websocket.ts
@@ -464,19 +464,41 @@ function createMessageHandler(
     Fire-and-forget, swallowed failure, same posture as `record`: a database hiccup here must not be a
     reason a chat turn fails.
   */
+  // Whether the chosen name has actually reached the transcript. False until a rename RETURNS true — see
+  // the retry note inside `fileAsCommander`.
+  let commanderNamed = false;
+
   const fileAsCommander = (): void => {
+    // TEMPORARY instrumentation, 2026-08-22. The chosen name has failed to reach the transcript twice, and
+    // reasoning about the path has been wrong twice. Remove once the cause is known.
+    logger.warn('[commander-name] fileAsCommander', {
+      commandHq,
+      transcriptId,
+      hasName: !!commanderName,
+      name: commanderName ?? null,
+      alreadyNamed: commanderNamed,
+    });
     if (!commandHq || !transcriptId) return;
     const userId = sessionManager.getSession(sessionId)?.userId;
     if (!userId) return;
     const filedId = transcriptId;
     void createCommandHqSession(userId, filedId)
       .then(async () => {
-        // The chosen name, applied once and only if one was chosen.
-        //
-        // `renameClaudeSession` writes a `summary` record, which is what sets `hasExplicitTitle` — and an
-        // explicit title is never overwritten by the harness's own `ai-title` or by the first-message
-        // fallback. So this wins permanently rather than racing the titling.
-        if (!commanderName?.trim()) return;
+        /*
+          The chosen name, applied once — and RETRIED, because the first attempt usually fails.
+
+          `fileAsCommander` runs on `session:claude`, which arrives at the START of a turn: the transcript
+          file may not be on disk yet, and `renameClaudeSession` returns false when it cannot find one. It
+          returns a boolean that nothing was checking, so the name was silently dropped and the conversation
+          kept the harness's own `ai-title` — which is exactly what the first live test showed.
+
+          So the attempt is recorded and retried at the end of the turn, by which point the file certainly
+          exists. Idempotent: once it succeeds, `commanderNamed` stops it repeating.
+
+          It still writes a `summary` record, which sets `hasExplicitTitle` — and an explicit title is never
+          overwritten by `ai-title` or by the first-message fallback. So it wins whenever it lands.
+        */
+        if (!commanderName?.trim() || commanderNamed) return;
         // The same identity resolution every chat route uses, rather than a second copy of it: it is what
         // decides the home and the OS user, and a rename writes a file as that user.
         const user = await getUserById(userId).catch(() => null);
@@ -487,7 +509,8 @@ function createMessageHandler(
         // working directory now, so that path is usually wrong. `findTranscript` treats the cwd as a HINT
         // and locates the transcript wherever it actually is — so this works either way, and passing a
         // path we know is probably wrong would be the kind of thing that reads as intent later.
-        renameClaudeSession(who, who.home, filedId, commanderName.trim());
+        commanderNamed = renameClaudeSession(who, who.home, filedId, commanderName.trim());
+        logger.warn('[commander-name] rename attempt', { filedId, home: who.home, ok: commanderNamed });
       })
       .catch((err: unknown) => {
         logger.warn('Could not file this session as a commander', {
@@ -554,6 +577,9 @@ function createMessageHandler(
       record();
       fileAsCommander();
     }
+    // And retried on every result until the name lands. The first attempt runs before the transcript file
+    // exists, so the end of the first turn is the earliest a rename can succeed.
+    if (msg.type === 'result' && commandHq && !commanderNamed) fileAsCommander();
 
     /*
       The watcher loop — see `docs/command-hq.md` → "The watcher loop" and `handoffContract` in
diff --git a/src/servers/api/command-hq/router.ts b/src/servers/api/command-hq/router.ts
index 3e70ee8b..d88c75c0 100644
--- a/src/servers/api/command-hq/router.ts
+++ b/src/servers/api/command-hq/router.ts
@@ -5,7 +5,7 @@ import { checkBudget } from '../sub-agents/budget';
 import * as errors from '@@/custom-errors';
 import { resolveHomeDir } from '@@/user-home';
 import { getCommandersDir, toShellUsername } from '@@/data-path';
-import { getChatEventsSince, ingestSpawnedChildren } from 'officerdb';
+import { forgetChatSessions, getChatEventsSince, ingestSpawnedChildren } from 'officerdb';
 import {
   clearSpawnedRecord,
   listSpawnedSessions,
@@ -552,14 +552,23 @@ commandHqRouter.delete('/commanders/:sessionId', async (ctx) => {
     (c) => c.spawnedSessionId,
   );
   let childrenDeleted = 0;
+  // Every transcript id actually removed — the commander's and its children's, chains included. Collected
+  // rather than assumed, because a `/clear` chain is several ids behind one conversation.
+  const forgotten: string[] = [];
   for (const child of children) {
     try {
       // A spawned agent runs in the platform checkout, not the commanders directory, so its transcript
       // lives in that project's group — the same lookup `/chat/sessions/:id` falls back to.
       // The cwd is a HINT here, not an authority — `deleteClaudeSession` falls back to locating the
-      // transcript wherever it actually is, which is what makes this work for a child that ran in the
-      // platform checkout rather than the commanders directory.
-      if (deleteClaudeSession(who, who.home, child)) childrenDeleted += 1;
+      // transcript wherever it actually is, which is what makes this work for a child that ran in a
+      // different directory from its parent.
+      //
+      // `.length`, not truthiness: this returns the ids it removed, and an empty array is truthy.
+      const removedChild = deleteClaudeSession(who, who.home, child);
+      if (removedChild.length) {
+        childrenDeleted += 1;
+        forgotten.push(...removedChild);
+      }
     } catch {
       // Already gone, or never written. Counted as not-deleted rather than failing the request.
     }
@@ -567,9 +576,21 @@ commandHqRouter.delete('/commanders/:sessionId', async (ctx) => {
   clearSpawnedRecord(who.email, sessionId);
 
   // 3. The commander itself.
-  deleteClaudeSession(who, who.home, sessionId);
+  forgotten.push(...deleteClaudeSession(who, who.home, sessionId));
   await deleteCommandHqSession(user.id, sessionId);
 
+  /*
+    Forget what the platform stored ABOUT every transcript that just went — the commander's and its
+    children's, in one call.
+
+    The `command_hq_*` tables cascade from the row, because they reference it. These four do not: they are
+    keyed on a transcript id, which is a FILE, so there is no row for them to reference and nothing to
+    cascade from. Left behind they are mostly inert — a model, a bell preference, a durable copy of turn
+    output — except `nudges`, which is a live schedule that would keep firing at a conversation that no
+    longer exists.
+  */
+  await forgetChatSessions(forgotten);
+
   // Said back rather than a bare ok: this is the one irreversible action here, and the counts are what
   // make it auditable after the fact.
   return ctx.json({ ok: true, processesStopped: stopped, childrenFound: children.length, childrenDeleted });