tools: add task_plan and task_complete as shell/python scripts

Replaces the removed built-in task server. Plans are written to
$OLLIE_9MOUNT/pl/ (persistent, shared across sessions). Scripts live
in the tools directory and are invoked via execute_tool.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tools/task_complete.py

@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+# description: Mark a plan step complete; returns remaining steps
+# Args: <plan-file> <step-substring>
+import sys, os, re
+
+if len(sys.argv) < 3:
+    print("usage: task_complete <plan-file> <step-substring>", file=sys.stderr)
+    sys.exit(1)
+
+ollie = os.environ.get('OLLIE_9MOUNT', os.path.expanduser('~/mnt/ollie'))
+plan_dir = os.path.join(ollie, 'pl')
+
+# Accept either a bare filename or a path; always resolve against plan_dir
+filepath = os.path.join(plan_dir, os.path.basename(sys.argv[1]))
+substring = sys.argv[2].lower()
+
+with open(filepath) as f:
+    lines = f.readlines()
+
+matched = False
+for i, line in enumerate(lines):
+    if re.match(r'^- \[ \] ', line) and substring in line.lower():
+        lines[i] = line.replace('- [ ] ', '- [x] ', 1)
+        matched = True
+        break
+
+if not matched:
+    print(f"no unchecked step matching {sys.argv[2]!r}", file=sys.stderr)
+    sys.exit(1)
+
+remaining = [line[6:].strip() for line in lines if re.match(r'^- \[ \] ', line)]
+
+def restat(path, status):
+    return re.sub(r'__(todo|wip|complete)\.md$', f'__{status}.md', path)
+
+if '__todo' in filepath:
+    newpath = restat(filepath, 'wip')
+elif not remaining and '__wip' in filepath:
+    newpath = restat(filepath, 'complete')
+else:
+    newpath = filepath
+
+with open(filepath, 'w') as f:
+    f.writelines(lines)
+
+if newpath != filepath:
+    os.rename(filepath, newpath)
+
+if remaining:
+    print('\n'.join(f'- {s}' for s in remaining))
+else:
+    print('all steps complete')

tools/task_plan.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+# description: Create a task plan with ordered steps as a markdown checklist
+# Args: <goal> <step1> [step2] ...
+# Output: relative path to the created plan file
+set -euo pipefail
+
+OLLIE="${OLLIE_9MOUNT:-$HOME/mnt/ollie}"
+PLAN_DIR="$OLLIE/pl"
+
+GOAL="${1:?usage: task_plan <goal> <step1> [step2] ...}"
+shift
+
+if [ $# -eq 0 ]; then
+    echo "error: at least one step required" >&2
+    exit 1
+fi
+
+TIMESTAMP=$(date '+%Y%m%dT%H%M%S')
+UID8=$(cat /proc/sys/kernel/random/uuid 2>/dev/null | tr -d '-' | cut -c1-8 \
+    || od -A n -t x1 /dev/urandom | tr -d ' \n' | cut -c1-8)
+SLUG=$(printf '%s' "$GOAL" \
+    | tr '[:upper:]' '[:lower:]' \
+    | tr -cs 'a-z0-9' '-' \
+    | sed 's/^-//;s/-$//' \
+    | cut -c1-48)
+
+FILENAME="${TIMESTAMP}_${UID8}--${SLUG}__todo.md"
+FILEPATH="$PLAN_DIR/$FILENAME"
+
+{
+    printf '# %s\n\n' "$GOAL"
+    for step in "$@"; do
+        printf '- [ ] %s\n' "$step"
+    done
+} > "$FILEPATH"
+
+echo "$FILENAME"