chore: remove Python hook scripts, all hooks now use Rust binary

- Deleted scripts/hooks/auto-memory.py (288 lines)
- Deleted scripts/hooks/ralph-guard.py (751 lines)
- hooks.json: all 5 ralph-guard refs → flowctl hook ralph-guard
- ralph-init SKILL.md: no longer copies Python hook files
- docs/ralph.md + CODEBASE_MAP.md: updated references

Python hook scripts: 0 remaining. All hooks run via bin/flowctl.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: z23cc

docs/CODEBASE_MAP.md

@@ -146,8 +146,8 @@ flow-code/
 │   │           ├── __init__.py, commands.py, prompts.py
 │   │           ├── adversarial.py, checkpoint.py, codex_utils.py
 │   ├── hooks/
-│   │   ├── auto-memory.py        # Stop hook: Gemini transcript → .flow/memory/
-│   │   └── ralph-guard.py        # Ralph workflow enforcer
+│   │   ├── flowctl hook auto-memory  # Stop hook: transcript → .flow/memory/
+│   │   └── flowctl hook ralph-guard  # Ralph workflow enforcer (Rust)
 │   ├── smoke_test.sh             # Quick flowctl sanity test
 │   ├── ci_test.sh                # Comprehensive CI test suite
 │   └── ralph_*.sh                # Ralph smoke/e2e test scripts
@@ -212,17 +212,17 @@ flow-code/
 
 ```
 PreToolUse (Bash|Execute, Edit|Write)
-    └── ralph-guard.py — blocks invalid commands during Ralph runs
+    └── flowctl hook ralph-guard — blocks invalid commands during Ralph runs
 
 PostToolUse (Bash|Execute)
-    └── ralph-guard.py — tracks state (verdicts, receipts, done calls)
+    └── flowctl hook ralph-guard — tracks state (verdicts, receipts, done calls)
 
 Stop
-    ├── ralph-guard.py — blocks stop if receipt missing
-    └── auto-memory.py — extracts learnings via Gemini → .flow/memory/
+    ├── flowctl hook ralph-guard — blocks stop if receipt missing
+    └── flowctl hook auto-memory — extracts learnings via Gemini → .flow/memory/
 
 SubagentStop
-    └── ralph-guard.py — same as Stop
+    └── flowctl hook ralph-guard — same as Stop
 ```
 
 All hooks are conditional — no-op if guard/memory files don't exist.
@@ -329,7 +329,7 @@ sequenceDiagram
 
 - `flowctl.py` uses `datetime.utcnow()` (deprecated in Python 3.12+) — expect DeprecationWarning
 - `which flowctl` will always fail — it's bundled, not installed globally
-- Ralph hooks only activate when `FLOW_RALPH=1` AND `scripts/ralph/hooks/ralph-guard.py` exists
+- Ralph hooks only activate when `FLOW_RALPH=1` AND `bin/flowctl` exists
 - Auto-memory hook timeout is 45s (Gemini call) — can slow session exit
 - `scan-codebase.py` requires `tiktoken` — use `uv run` for auto-install or `pip install tiktoken`
 - Worker has `disallowedTools: Task` — cannot spawn sub-agents (prevents infinite nesting)

docs/ralph.md

@@ -716,7 +716,7 @@ Plugin hooks enforce workflow rules deterministically.
 ```
 plugins/flow-code/
   hooks/hooks.json              # Config
-  scripts/hooks/ralph-guard.py  # Logic
+  bin/flowctl hook ralph-guard  # Logic
 ```
 
 **Disable temporarily:** Unset `FLOW_RALPH`

hooks/hooks.json

@@ -7,7 +7,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "[ ! -f scripts/ralph/hooks/ralph-guard.py ] || scripts/ralph/hooks/ralph-guard.py",
+            "command": "\"${DROID_PLUGIN_ROOT:-${CLAUDE_PLUGIN_ROOT}}/bin/flowctl\" hook ralph-guard",
             "timeout": 5
           }
         ]
@@ -28,7 +28,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "[ ! -f scripts/ralph/hooks/ralph-guard.py ] || scripts/ralph/hooks/ralph-guard.py",
+            "command": "\"${DROID_PLUGIN_ROOT:-${CLAUDE_PLUGIN_ROOT}}/bin/flowctl\" hook ralph-guard",
             "timeout": 5
           }
         ]
@@ -40,7 +40,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "[ ! -f scripts/ralph/hooks/ralph-guard.py ] || scripts/ralph/hooks/ralph-guard.py",
+            "command": "\"${DROID_PLUGIN_ROOT:-${CLAUDE_PLUGIN_ROOT}}/bin/flowctl\" hook ralph-guard",
             "timeout": 5
           }
         ]
@@ -62,7 +62,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "[ ! -f scripts/ralph/hooks/ralph-guard.py ] || scripts/ralph/hooks/ralph-guard.py",
+            "command": "\"${DROID_PLUGIN_ROOT:-${CLAUDE_PLUGIN_ROOT}}/bin/flowctl\" hook ralph-guard",
             "timeout": 5
           }
         ]
@@ -83,7 +83,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "[ ! -f scripts/ralph/hooks/ralph-guard.py ] || scripts/ralph/hooks/ralph-guard.py",
+            "command": "\"${DROID_PLUGIN_ROOT:-${CLAUDE_PLUGIN_ROOT}}/bin/flowctl\" hook ralph-guard",
             "timeout": 5
           }
         ]