Sync fingerprint ignores <include> dependencies — stale code after included file changes #522
Description
pdd sync fingerprints only the top-level .prompt file, not its <include> dependencies. When an included file changes, sync reports "nothing to do" and skips regeneration, leaving generated code stale.
File: pdd/sync_determine_operation.py:892-906, 1364
Reproduction
mkdir /tmp/fp-test && cd /tmp/fp-test && git init && git commit --allow-empty -m "init"
# Create a prompt that includes a dependency
echo 'Create a helper function that uses shared types.
<include>shared_types.py</include>
Generate a function that creates a User object.' > helper_python.prompt
# Create the included file
echo 'class User:
def __init__(self, name: str, age: int):
self.name = name
self.age = age' > shared_types.py
# First sync — generates code and saves fingerprint
pdd --force sync helper --no-steer --skip-tests
# Modify the included file (add email field)
echo 'class User:
def __init__(self, name: str, age: int, email: str):
self.name = name
self.age = age
self.email = email' > shared_types.py
# Second sync — should regenerate but doesn't
pdd --force sync helper --no-steer --skip-tests
# Result: 0.01s, $0.00 cost, "nothing to do"