diff --git a/.specstory/history/2025-12-29_17-30Z-zipseq-thumbs-db-exclusion.md b/.specstory/history/2025-12-29_17-30Z-zipseq-thumbs-db-exclusion.md
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+
+
+
+
+# Zipseq Thumbs.db exclusion (2025-12-29 17:30Z)
+
+_**User (2025-12-29 17:37Z)**_
+
+zipseq needs to completely ignore Thumbs.db. It should be removed from any existing manifests. If the manifest is changed, but only Thumbs.db is changed (removed) it should not be rezipped.
+
+---
+
+_**Agent (model default, mode Agent)**_
+
+
+
+---
+
+
+Examining `zip_sequences.py` to understand how it handles manifests and files.
+
+
+---
+
+
+Tool use: **read_file** • Read file: zip_sequences.py
+
+
+
+
+---
+
+
+
+---
+
+
+Updating `zip_sequences.py` to ignore `Thumbs.db` files. Modifying file iteration, state loading, and state comparison.
+
+
+---
+
+
+Tool use: **read_file** • Read file: zip_sequences.py
+
+
+
+
+---
+
+
+Tool use: **read_file** • Read file: zip_sequences.py
+
+
+
+
+---
+
+
+Tool use: **read_file** • Read file: zip_sequences.py
+
+
+
+
+---
+
+
+Tool use: **read_file** • Read file: zip_sequences.py
+
+
+
+
+---
+
+
+
+---
+
+
+Updating the code to ignore `Thumbs.db` files:
+
+
+---
+
+
+
+Tool use: **search_replace** • Edit file: zip_sequences.py
+
+**Chunk 1**
+Lines added: 3, lines removed: undefined
+
+```diff
+@@ -522,4 +522,7 @@
+ continue
+ for filename in filenames:
++ # Ignore Thumbs.db files completely
++ if filename.lower() == "thumbs.db":
++ continue
+ yield path / filename
+
+```
+
+
+
+
+
+---
+
+
+
+Tool use: **search_replace** • Edit file: zip_sequences.py
+
+**Chunk 1**
+Lines added: 6, lines removed: undefined
+
+```diff
+@@ -567,4 +567,10 @@
+ try:
+ state = json.loads(state_path.read_text())
++ # Remove Thumbs.db entries from loaded state
++ if "files" in state:
++ state["files"] = [
++ entry for entry in state.get("files", [])
++ if Path(entry.get("path", "")).name.lower() != "thumbs.db"
++ ]
+ # Normalize timestamps in loaded state to ensure consistency
+ # This handles state files created before normalization was added
+```
+
+
+
+
+
+---
+
+
+
+Tool use: **search_replace** • Edit file: zip_sequences.py
+
+**Chunk 1**
+Lines added: 4, lines removed: 1
+
+```diff
+@@ -597,7 +597,10 @@
+
+ def normalize_state(state: dict) -> dict:
+- """Normalize timestamps in state to filesystem precision."""
++ """Normalize timestamps in state to filesystem precision and filter out Thumbs.db."""
+ normalized = {"files": []}
+ for entry in state.get("files", []):
++ # Ignore Thumbs.db files in state comparison
++ if Path(entry.get("path", "")).name.lower() == "thumbs.db":
++ continue
+ mtime_ns = entry["mtime_ns"]
+ if is_windows:
+```
+
+**Chunk 2**
+Lines added: 1, lines removed: 1
+
+```diff
+@@ -610,5 +613,5 @@
+ return normalized
+
+- # Compare normalized states
++ # Compare normalized states (Thumbs.db already filtered out)
+ normalized_seq = normalize_state(seq_state)
+ normalized_stored = normalize_state(stored_state)
+```
+
+
+
+
+
+---
+
+
+
+---
+
+
+Checking for lint errors and verifying that `zip_sequence` uses the filtered file list:
+
+
+---
+
+
+
+ Tool use: **read_lints** • Read lints for 1 file
+
+Lint paths:
+
+- `zip_sequences.py`
+
+Lint results
+
+
+**No lint errors found**
+
+
+
+---
+
+
+Tool use: **read_file** • Read file: zip_sequences.py
+
+
+
+
+---
+
+
+
+---
+
+
+Verifying that `zip_sequence` uses the filtered iterator:
+
+
+---
+
+
+Tool use: **read_file** • Read file: zip_sequences.py
+
+
+
+
+---
+
+
+
+---
+
+
+## Summary of Changes
+
+1. **`iter_sequence_files()`** — Skips `Thumbs.db` files during iteration, so they're never included in new states or archives.
+
+2. **`load_state()`** — Removes any `Thumbs.db` entries from existing manifests when loading state files.
+
+3. **`state_changed()`** — Filters out `Thumbs.db` entries from both states before comparison, so if the only change is removing `Thumbs.db`, it won't trigger a rezip.
+
+Results:
+- `Thumbs.db` files are ignored during scanning
+- Existing manifests have `Thumbs.db` entries removed when loaded
+- If a manifest change is only due to `Thumbs.db` removal, it won't trigger recompression
+
+The `zip_sequence()` function automatically benefits from these changes since it uses `iter_sequence_files()`, which now filters out `Thumbs.db`.
+
+No linting errors were found. The changes are ready to use.
+
+---
+
diff --git a/zip_sequences.py b/zip_sequences.py
index d6474e2..7437630 100644
--- a/zip_sequences.py
+++ b/zip_sequences.py
@@ -521,6 +521,9 @@ def iter_sequence_files(seq_dir: Path) -> Iterator[Path]:
if is_archive_path(path):
continue
for filename in filenames:
+ # Ignore Thumbs.db files completely
+ if filename.lower() == "thumbs.db":
+ continue
yield path / filename
@@ -563,6 +566,12 @@ def load_state(state_path: Path) -> dict | None:
return None
try:
state = json.loads(state_path.read_text())
+ # Remove Thumbs.db entries from loaded state
+ if "files" in state:
+ state["files"] = [
+ entry for entry in state.get("files", [])
+ if Path(entry.get("path", "")).name.lower() != "thumbs.db"
+ ]
# Normalize timestamps in loaded state to ensure consistency
# This handles state files created before normalization was added
is_windows = platform.system() == "Windows"
@@ -587,9 +596,12 @@ def state_changed(seq_state: dict, stored_state: dict | None, *, verbose: bool =
is_windows = platform.system() == "Windows"
def normalize_state(state: dict) -> dict:
- """Normalize timestamps in state to filesystem precision."""
+ """Normalize timestamps in state to filesystem precision and filter out Thumbs.db."""
normalized = {"files": []}
for entry in state.get("files", []):
+ # Ignore Thumbs.db files in state comparison
+ if Path(entry.get("path", "")).name.lower() == "thumbs.db":
+ continue
mtime_ns = entry["mtime_ns"]
if is_windows:
mtime_ns = (mtime_ns // 100) * 100
@@ -600,7 +612,7 @@ def state_changed(seq_state: dict, stored_state: dict | None, *, verbose: bool =
})
return normalized
- # Compare normalized states
+ # Compare normalized states (Thumbs.db already filtered out)
normalized_seq = normalize_state(seq_state)
normalized_stored = normalize_state(stored_state)