workstation: harden memory hooks — prune dead plugin refs + homelab-CLI-only store

wire-memory-hooks.py now PRUNES any settings.json hook still pointing at the
retired claude-memory plugin (plugins/claude-memory/hooks/) before the additive
pass. install_memory() rm -rf's that dir, so those entries are dangling — and a
missing UserPromptSubmit hook exits 2, a BLOCKING error that erases the prompt
and froze emo's sessions (2026-06-22). The plugin shares basenames with the
homelab hooks, so the old additive-only logic saw the dead plugin path as
"already present" and skipped installing the real ~/.claude/hooks/ copy; pruning
first fixes that. Verified against emo's exact original config: yields the
correct 4-hook set, drops the dead PermissionRequest entry, idempotent on rerun.

auto-learn.py now stores via the `homelab memory` CLI only — dropped the direct
HTTP path and the local-SQLite fallback (memory is homelab-CLI-only per Viktor;
never local files). No-ops silently when no API key is in env (e.g. ancamilea).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

scripts/workstation/claude-hooks/wire-memory-hooks.py

@@ -1,11 +1,17 @@
 #!/usr/bin/env python3
-"""Wire the homelab-memory hooks into a user's ~/.claude/settings.json, if-absent.
+"""Wire the homelab-memory hooks into a user's ~/.claude/settings.json.
 
 Part of the claude-memory MCP -> homelab CLI migration (all-users rollout).
-Idempotent + ADDITIVE: only ADDS a hook group when no existing command references
-that hook script. Never removes/reorders existing hooks, and never touches `env`
-(the per-user MEMORY_API_KEY) or any other setting. Safe to run on every reconcile
-and on a user's already-populated config.
+Two passes, idempotent, never touching `env` (the per-user MEMORY_API_KEY) or any
+other setting:
+  (0) PRUNE any hook command still pointing at the retired claude-memory plugin
+      (`plugins/claude-memory/hooks/`). install_memory() rm -rf's that dir, so
+      those entries are dangling — and a missing UserPromptSubmit hook exits 2,
+      a BLOCKING error that erases the prompt and freezes the session (devvm emo
+      incident 2026-06-22). Must run BEFORE the additive pass: the plugin shares
+      basenames with the homelab hooks, so without pruning, the "already present"
+      check below matches the dead plugin path and skips the real install.
+  (1) ADD each homelab hook group when no existing command references its script.
 
 Usage: wire-memory-hooks.py <home_dir>
 Exit 0 on success (changed or already-present); 1 only on an unreadable settings file.
@@ -38,6 +44,28 @@ except (json.JSONDecodeError, OSError) as e:
 
 hooks = data.setdefault("hooks", {})
 changed = False
+
+# (0) Prune dead claude-memory plugin hooks (see module docstring). Must precede
+# the additive pass so shared basenames don't mask a needed install.
+DEAD_REF = "plugins/claude-memory/hooks/"
+for event in list(hooks.keys()):
+    new_groups = []
+    removed_any = False
+    for g in (hooks.get(event) or []):
+        original = g.get("hooks") or []
+        kept = [h for h in original if DEAD_REF not in (h.get("command", "") or "")]
+        if len(kept) != len(original):
+            removed_any = True
+        if kept:
+            new_groups.append({**g, "hooks": kept})
+    if removed_any:
+        changed = True
+        if new_groups:
+            hooks[event] = new_groups
+        else:
+            del hooks[event]
+
+# (1) Additively wire each homelab hook, if no command already references it.
 for event, basename, command, extra in WANT:
     groups = hooks.setdefault(event, [])
     already = any(