Thanks for the contribution @Garllee. I read through the diff carefully and want to flag a few mismatches between the PR description and what the patch actually changes — these will need to be reconciled before this can move forward.

1. The "Silent Task Skipping" change isn't here.

The PR description's first bullet says:

Silent Task Skipping — Tasks were skipped without notification

• Added WARNING-level logging when ticks are skipped
• Includes diagnostic hints for troubleshooting

But the diff only touches api/routes.py. There are no changes under cron/ (where the scheduler/tick logic lives) and git diff bf7bc6b..fb9fe70 --stat confirms api/routes.py | 89 ++++-- is the only file. So whatever skip-logging change you intended, it isn't in this branch. If you meant to ship it, please push the missing commit; if you decided to defer it, drop that bullet from the description so the PR scope matches the code.

2. The "7 comprehensive tests (all passing)" claim doesn't match the tree.

No test file is added or modified in this PR. Hermes WebUI requires test coverage for non-trivial logic — both the new /api/crons/chunk endpoint and the new metadata fields on _handle_cron_output need regression coverage. Specifically I'd want to see at minimum:

• total_size / is_truncated correctness for both small and large outputs
• /api/crons/chunk happy path: offset 0, mid-file, end-of-file (has_more=false)
• /api/crons/chunk validation: missing params (400), bad job_id shape (400), path traversal attempt rejected (400), missing file (404)
• chunk_size clamping (1024 floor, 65536 ceiling)

If you can point me at the 7 tests you mentioned, please push them; otherwise they need to be written.

3. Bytes vs characters in the chunk reader.

with open(fpath, 'r', encoding='utf-8', errors='replace') as f:
    f.seek(offset)
    chunk = f.read(chunk_size)

The endpoint and docstring talk about offset and chunk_size in bytes ("start position in bytes", "max bytes to return"). But this opens the file in text mode, which makes seek() accept opaque cookies (not byte offsets) and read(n) return up to n characters, not bytes. With multi-byte UTF-8 (any non-ASCII content in cron output — emoji, CJK, accented characters), client pagination based on byte math will desync from server reality, and f.seek(offset) with arbitrary integer offsets is undefined behavior on text streams in CPython (it's only meant to round-trip values returned by tell()).

Two options that both work cleanly:

• Byte mode: open 'rb', then chunk.decode('utf-8', errors='replace') before returning. total_size = fpath.stat().st_size already reports bytes, so the API contract stays consistent.
• Document chars, not bytes: keep text mode but rename the params in the response and docs to char_offset / char_size, and have total_size report len(text) rather than st_size.

I'd lean toward byte mode — it matches stat().st_size and what most pagination clients expect.

4. full_output_url field.

/api/crons/run?job_id=…&filename=… is the right route (the GET form maps to _handle_cron_run_detail), so that part is fine. Worth a comment in the docstring noting that the URL is the GET variant — easy to misread given that POST /api/crons/run triggers a job.

5. Code duplication with _handle_cron_run_detail.

The job_id regex, the (CRON_OUT / job_id / filename).resolve() + is_relative_to traversal check, and the 400/404 fallthrough are now in two places. Worth factoring out a small _resolve_cron_output_path(job_id, filename) -> Path | tuple[error, status] helper so future tightening only happens once.

Smaller nits

• _CRON_OUTPUT_CHUNK_SIZE = 8192 in module scope is fine, but the clamp min(65536, max(1024, …)) doesn't reference it; if 8192 is meant to be the canonical default consider min(_CRON_OUTPUT_MAX_CHUNK, max(_CRON_OUTPUT_MIN_CHUNK, …)) with all three named.
• The ✅ emoji comments (# ✅ New: …) on diff lines won't survive review style — Hermes WebUI keeps inline comments minimal and descriptive. Plain # Paginated retrieval for large cron outputs reads better.

Summary

The chunked retrieval idea is reasonable and the path-traversal/validation defenses are well thought through. But the PR description currently overstates what's in the diff (no tick logging, no tests), and the bytes-vs-chars issue means the chunk endpoint will misbehave on any non-ASCII output. Worth tightening before maintainer review.

Thanks for the contribution @Garllee — first-time PR to the project, welcome.

I went through the diff against current master carefully and want to flag a few things before this can land. Adding maintainer-review while these are worked through.

1. PR description doesn't match the diff (most important)

The PR description and ## Issues Fixed claim three fixes:

1. "Silent Task Skipping" — claims to add WARNING-level logging when ticks are skipped
2. "Output Truncation" — adds metadata fields
3. "No Pagination Support" — adds /api/crons/chunk endpoint

The diff against master only contains items 2 and 3. There is no logging change anywhere in the patch:

$ gh pr diff 1588 --repo nesquena/hermes-webui | grep -E "^\+" | grep -iE "warning|skip|tick"
# (nothing)

It's possible there's an earlier commit you intended to include that didn't make it into the push, but as-shipped the description claims a fix that isn't in the code. Either drop the silent-task-skipping bullet from the description, or add the actual logging change.

2. full_output_url points to the wrong endpoint

In _handle_cron_output the new metadata field reads:

"full_output_url": f"/api/crons/run?job_id={job_id}&filename={f.name}",

/api/crons/run is the POST endpoint that triggers a cron execution (_handle_cron_run at api/routes.py:6300+). Hitting that URL via GET with the query params will fall through the GET dispatcher, but if a client follows that URL via POST it will start a brand-new cron job. That's not what the description says ("link to view full output").

If the goal is to fetch the full file, point to your new /api/crons/chunk endpoint with offset=0&chunk_size=..., or to a separate read-only /api/crons/output/full route. As-is, this URL field is misleading at best and dangerous at worst.

3. Text-mode f.seek() on UTF-8 files breaks multi-byte characters

In _handle_cron_output_chunk:

with open(fpath, 'r', encoding='utf-8', errors='replace') as f:
    f.seek(offset)
    chunk = f.read(chunk_size)

Python's text-mode f.seek(offset) is only safe at offsets returned by f.tell(), not at arbitrary byte positions. Seeking into the middle of a multi-byte UTF-8 character will produce a decode error or garbled output (the errors='replace' will silently mask the corruption with U+FFFD replacement chars).

Cron output frequently contains non-ASCII content (Chinese, accented chars, emoji, box-drawing chars, etc.), so this will break in practice. Two options:

a. Open in binary mode, read bytes, decode after with explicit boundary handling — but boundary handling is fiddly.
b. Read the whole file as text and slice in memory — simple, fine for files up to a few MB. Since cron output is already capped at _CRON_OUTPUT_CONTENT_LIMIT = 8000 chars elsewhere, the realistic file sizes are small.

I'd recommend (b) unless the design genuinely needs to support multi-MB outputs, in which case (a) needs careful character-boundary handling.

4. Other observations (non-blocking)

• The ✅ New: emoji-prefix style comments in the diff are a bit unusual for this codebase — house style is plain # comments. Not blocking.
• _handle_cron_output reading every file's full content with f.read_text() and then computing len(txt) and is_truncated = len(txt) > len(truncated_content) is correct but allocates the whole file twice for large files. For the existing 8KB cap path it's fine; if file sizes grow this becomes a hotspot.
• The [A-Za-z0-9_-][A-Za-z0-9_.-]{0,63} job_id regex doesn't catch .. because .. matches . followed by . and the trailing . isn't allowed at end of {0,63} — actually wait, you do correctly check or job_id in (".", "..") separately. Good defense-in-depth.
• The is_relative_to(CRON_OUT.resolve()) path-traversal guard is the right shape, ✅.

What I'd want to see before un-blocking

• Either reconcile the description with the diff (drop the silent-task-skipping claim), OR add the actual logging change you intended
• Fix full_output_url to point at a real read endpoint (or remove the field if it's not load-bearing)
• Switch the chunk reader to binary-safe slicing OR use whole-file slice-in-memory

Once those land, happy to do a closer line-level read. Genuine thanks for picking up cron pagination — large outputs blowing up the browser is a real bug class.