fix(flow): list DPLAN prefix, double error messages, local prompt

- List display now shows correct prefix (DPLAN-XXXX not FPLAN-XXXX)
  by tagging plans with source registry prefix during merge
- Modules return True after handling commands (even on failure)
  to prevent flow.py from printing spurious "Unknown command"
- Configured flow local prompt with architecture overview

Co-Authored-By: @flow <flow@aipass>

src/aipass/flow/.aipass/aipass_local_prompt.md

@@ -1,14 +1,63 @@
-# FLOW Branch-Local Context
-<!-- Source: src/aipass/flow/.aipass/aipass_local_prompt.md -->
+# Flow -- Plan Lifecycle Management
 
-> Auto-created by aipass init. Customize for your branch.
+Flow is AIPass's unified plan lifecycle system. It creates, tracks, closes, and archives numbered work plans across multiple plan types (FPLAN, DPLAN) via a data-driven plugin architecture.
 
-## Status: NEEDS CONFIGURATION
+## Commands
 
-This file is injected into every AI conversation when working from this branch directory. Configure it with:
+```bash
+drone @flow create . "Subject"              # FPLAN (default)
+drone @flow create . "Subject" master       # FPLAN master template
+drone @flow create . "Design topic" dplan   # DPLAN
+drone @flow close FPLAN-0042                # Close specific plan
+drone @flow close --all                     # Close all open plans
+drone @flow list                            # List open plans (all types)
+drone @flow list all                        # List all plans
+drone @flow restore FPLAN-0042              # Reopen a closed plan
+```
 
-- Who this branch is (role, purpose)
-- Key commands and workflows
-- Architecture overview
-- Critical files and operational rules
-- Integration points with other branches
+## Architecture
+
+- `apps/flow.py` -- Entry point. Auto-discovers modules in `apps/modules/` via `handle_command()` convention.
+- `apps/modules/` -- Thin orchestrators. No business logic. Route to handlers and display results.
+- `apps/handlers/` -- Implementation. Grouped by domain: `plan/`, `registry/`, `template/`, `dashboard/`, `mbank/`, `summary/`.
+- `plan_types/` -- Data-only plugins. Each subdirectory has `plan_type.json` config + `templates/` with Markdown templates.
+- `flow_json/` -- Per-type JSON registries (`fplan_registry.json`, `dplan_registry.json`).
+
+## Plan Type Plugins
+
+Plan types are DATA, not code. Each plugin directory under `plan_types/` contains:
+- `plan_type.json` -- prefix, digits, registry_file, available_templates, default_template
+- `templates/` -- Markdown plan templates
+
+Discovered at runtime by `apps/handlers/template/plan_type_loader.py`. Add a new type by creating a new directory with these files.
+
+| Type | Prefix | Registry File | Templates |
+|------|--------|---------------|-----------|
+| flow_plans | FPLAN | fplan_registry.json | default, master |
+| dev_plans | DPLAN | dplan_registry.json | default |
+
+## Critical Files
+
+- `apps/flow.py` -- CLI entry point, module discovery, command routing
+- `apps/modules/create_plan.py` -- Plan creation orchestrator
+- `apps/modules/close_plan.py` -- Plan closure orchestrator (async post-processing, archival)
+- `apps/modules/list_plans.py` -- Multi-registry plan listing
+- `apps/handlers/plan/list_ops.py` -- Merges plans from all registries for display
+- `apps/handlers/plan/display.py` -- All formatting functions (prefix-aware)
+- `apps/handlers/plan/close_ops.py` -- Close implementation (file ops, registry update, vector intake)
+- `apps/handlers/template/plan_type_loader.py` -- Plugin discovery and config resolution
+- `apps/handlers/registry/load_registry.py` -- Registry loader (supports per-type registry files)
+
+## Integration Points
+
+- **aipass.cli** -- Rich console output (`console`, `header`, `success`, `error`, `warning`)
+- **aipass.prax** -- System logger
+- **aipass.memory** -- Vector intake pipeline on plan close
+- **aipass.trigger** -- Startup events and branch dashboard updates
+
+## Conventions
+
+- Modules return `True` from `handle_command()` when the command was recognized (even on failure), `False` only for "not my command".
+- Plan IDs follow `{PREFIX}-{NNNN}_topic_slug_YYYY-MM-DD.md`.
+- All file I/O uses `pathlib.Path` and `encoding='utf-8'`.
+- Handlers are stateless functions; modules inject dependencies.

src/aipass/flow/apps/handlers/plan/display.py

@@ -300,13 +300,18 @@ def format_plan_info(plan_key: str, plan_info: Dict[str, Any], prefix: str = "FP
     Args:
         plan_key: Plan number (e.g., "0001")
         plan_info: Plan metadata dictionary
-        prefix: Plan prefix (e.g. "FPLAN", "DPLAN")
+        prefix: Plan prefix (e.g. "FPLAN", "DPLAN").
+            Overridden by ``_source_prefix`` in *plan_info* when present
+            (set by list_ops when merging multi-registry plans).
 
     Returns:
         Formatted string with plan details
     """
     from datetime import datetime
 
+    # Use source prefix if tagged by list_ops, otherwise fall back to arg
+    display_prefix = plan_info.get("_source_prefix", prefix)
+
     subject = plan_info.get("subject", "No subject")
     location = plan_info.get("relative_path", "unknown")
     status = plan_info.get("status", "unknown")
@@ -320,7 +325,7 @@ def format_plan_info(plan_key: str, plan_info: Dict[str, Any], prefix: str = "FP
         except (ValueError, AttributeError):
             pass  # Keep original value if parsing fails
 
-    return f"  {prefix}-{plan_key}  [{status:>6}]  {location:<30}  {subject:<40}  {created}"
+    return f"  {display_prefix}-{plan_key}  [{status:>6}]  {location:<30}  {subject:<40}  {created}"
 
 
 def format_plans_list(

src/aipass/flow/apps/handlers/plan/list_ops.py

@@ -16,7 +16,7 @@ Usage:
     from aipass.flow.apps.handlers.plan.list_ops import list_plans_impl
 """
 
-from typing import Dict, Any
+from typing import Dict, Any, Tuple
 
 from aipass.prax import logger
 
@@ -27,20 +27,29 @@ from aipass.prax import logger
 MODULE_NAME = "list_plans"
 
 
-def _get_all_registry_files() -> list[str]:
-    """Return per-type registry filenames via plan-type discovery."""
+def _get_all_registry_info() -> Tuple[list[str], Dict[str, str]]:
+    """Return per-type registry filenames and a registry_file -> prefix map.
+
+    Returns:
+        (registry_files, prefix_map) where prefix_map maps e.g.
+        "dplan_registry.json" -> "DPLAN".  Empty list means caller
+        should fall back to the default registry.
+    """
     try:
         from aipass.flow.apps.handlers.template.plan_type_loader import discover_plan_types  # type: ignore[import-not-found]
         files: list[str] = []
+        prefix_map: Dict[str, str] = {}
         for _key, config in discover_plan_types().items():
             rf = config.get("registry_file")
-            if rf and rf not in files:
-                files.append(rf)
+            if rf:
+                prefix_map[rf] = config.get("prefix", "FPLAN")
+                if rf not in files:
+                    files.append(rf)
         if files:
-            return files
+            return files, prefix_map
     except Exception:
         pass
-    return []  # empty means caller should fall back to default
+    return [], {}  # empty means caller should fall back to default
 
 
 # =============================================
@@ -72,14 +81,16 @@ def list_plans_impl(
     try:
         # STEP 1: Load ALL per-type registries and merge plans
         merged_plans: Dict[str, Any] = {}
-        reg_files = _get_all_registry_files()
+        reg_files, reg_prefix_map = _get_all_registry_info()
 
         if reg_files:
             for reg_file in reg_files:
                 try:
                     registry = load_registry(registry_file=reg_file)
+                    source_prefix = reg_prefix_map.get(reg_file, "FPLAN")
                     for plan_num, plan_info in registry.get("plans", {}).items():
-                        # Prefix the key to avoid collisions across registries
+                        # Tag each plan with its source prefix for display
+                        plan_info["_source_prefix"] = source_prefix
                         merged_plans[plan_num] = plan_info
                 except Exception:
                     continue

src/aipass/flow/apps/modules/close_plan.py

@@ -290,13 +290,15 @@ def handle_command(command: str, args: List[str]) -> bool:
     # 2. VALIDATE: Check for parsing errors
     if error:
         console.print(format_delete_usage_error())
-        return False
+        return True  # Command was handled (error already displayed)
 
     # 3. EXECUTE: Run workflow orchestrator
-    success = close_plan(plan_num=plan_num, confirm=confirm, all_plans=all_plans)
+    close_plan(plan_num=plan_num, confirm=confirm, all_plans=all_plans)
 
-    # 4. RETURN: Result (close_plan already handles all output)
-    return success
+    # 4. RETURN: True = command was handled (even if the operation failed,
+    #    the error has already been displayed -- returning False would cause
+    #    flow.py to print a spurious "Unknown command" message)
+    return True
 
 
 # =============================================

src/aipass/flow/apps/modules/create_plan.py

@@ -275,11 +275,10 @@ def handle_command(command: str, args: List[str]) -> bool:
     )
     console.print(result_msg)
 
-    # Return boolean result
-    if success:
-        return True
-    else:
-        return False
+    # Command was handled (even if the operation failed, the error has
+    # already been displayed -- returning False would cause flow.py to
+    # print a spurious "Unknown command" message)
+    return True
 
 
 # =============================================

src/aipass/flow/apps/modules/list_plans.py

@@ -30,7 +30,7 @@ Filters:
 
 import sys
 from pathlib import Path
-from typing import List, Dict, Any
+from typing import List
 
 # INFRASTRUCTURE IMPORT PATTERN
 _PKG_ROOT = Path(__file__).resolve().parents[3]  # file.py -> modules/ -> apps/ -> flow/ -> aipass/
@@ -51,7 +51,6 @@ from aipass.flow.apps.handlers.registry.statistics import get_registry_statistic
 
 # Plan display handler
 from aipass.flow.apps.handlers.plan.display import (
-    format_plan_info,
     format_plans_list,
     format_statistics_summary
 )
@@ -208,10 +207,12 @@ def handle_command(command: str, args: List[str]) -> bool:
             console.print("[dim]Valid filters: open, closed, all[/dim]")
 
     # STEP 2: Execute workflow
-    success = list_plans(filter_type)
+    list_plans(filter_type)
 
-    # STEP 3: Return result
-    return success
+    # STEP 3: Command was handled (even if the operation failed, the error
+    # has already been displayed -- returning False would cause flow.py to
+    # print a spurious "Unknown command" message)
+    return True
 
 
 # =============================================

src/aipass/flow/apps/modules/restore_plan.py

@@ -226,13 +226,15 @@ def handle_command(command: str, args: List[str]) -> bool:
     # 2. VALIDATE: Check for parsing errors
     if error:
         console.print(format_restore_usage_error())
-        return False
+        return True  # Command was handled (error already displayed)
 
     # 3. EXECUTE: Run workflow orchestrator
-    success = restore_plan(plan_num=plan_num)
+    restore_plan(plan_num=plan_num)
 
-    # 4. RETURN: Result (restore_plan already handles all output)
-    return success
+    # 4. RETURN: True = command was handled (even if the operation failed,
+    #    the error has already been displayed -- returning False would cause
+    #    flow.py to print a spurious "Unknown command" message)
+    return True
 
 
 # =============================================