Export: single-file HTML archive of a whole session

[grooverLab]

fable export <thread> --format html exists for threads. Wanted: --session flag that renders every thread of a session into one self-contained HTML page (same footer, internal nav).

[martn2023]

@grooverLab , I would like to try this. Is it available for assignment?

[grooverLab]

@martn2023 it's yours — assigned! Welcome 🙌

Quick map to save you spelunking:

• fable/export.py already does md/HTML for a single thread (export_thread + the _html wrapper with inline CSS — keep output self-contained, no CDN links).
• This issue is the whole-session version: threads for a session come from the threads table (SELECT prompt_id FROM threads WHERE session_id = ? ORDER BY first_ts); render each via the existing render_thread and stitch into one page — a small table-of-contents with anchors per thread would be 🤌.
• CLI surface: extend fable export (see cmd_export) with a --session <id> mode; API twin lives in fable/serve.py (api_export) if you feel like wiring the dashboard button too, but CLI-only is a perfectly mergeable first PR.
• Tests: python3 -m unittest discover -s tests must stay green; pattern to copy is in tests/test_features.py. Ground rules are short: CONTRIBUTING.md — stdlib only, originals are sacred, frozen JSON fields.

And if you get stuck anywhere, comment @claude <question> right here — the repo's butler answers with full codebase context. Looking forward to it!

[martn2023]

@grooverLab, thank you for this opportunity to get my first ticket ever.

I just finished my big midterm, am now orienting myself on this. If I hit a wall and can't get around within 24 hours of it first popping up, I'll let you know.

[martn2023]

@grooverLab ,Got the fork, clone, confirmed I can push to a new branch, and installed the project. Before any new code was written, Unit Tests passed 174/183 and no failed tests in my area.

Running seed_demo.py bugged out. I do NOT think this is a blocker to me, as I can use tests/helpers.py per CONTRIBUTING.md instructions.

(venv) PS G:\My Drive\open_source\fable> python demo/seed_demo.py            
Traceback (most recent call last):
  File "G:\My Drive\open_source\fable\demo\seed_demo.py", line 224, in <module>
    main()
  File "G:\My Drive\open_source\fable\demo\seed_demo.py", line 212, in main
    store_card(conn, pid, {
  File "G:\My Drive\open_source\fable\fable\cards.py", line 342, in store_card
    json.dumps(card["ideas"]), json.dumps(card["features"]),
               ~~~~^^^^^^^^^
KeyError: 'ideas'

@claude do I need to worry about edge cases where the new --session feature is given a session with ZERO threads? If so, how do you advise I deal with this?

A) error out
B) return an html page with zero content?

[grooverLab]

@martn2023 nice — midterm behind you and straight into the first ticket, love it 🎉

Zero-thread sessions — good catch, and it's a blend, not A-or-B:

• Session exists but has no threads → return a valid, self-contained HTML page with a small empty-state (No threads in this session.), not a crash and not a blank file. An export asked for a real session shouldn't error just because it happens to be empty — a clean page is the least-surprising result and stays composable with the rest of your output.
• Session id that doesn't exist at all (typo / wrong id) → that's the one to error on, clearly, e.g. No session <id> — run fable discover?. A bad id silently producing an empty page is the real footgun.

So: never crash, distinguish empty from unknown, and drop a one-line test for each. That edge-case care is exactly what makes a PR a joy to merge.

On the seed_demo.py traceback — that one's on us, not you. store_card reads card["ideas"]/["features"] directly, but that demo dict predates those fields → KeyError. Not a blocker for your work (tests/helpers.py is the right call per CONTRIBUTING), and I'll patch the seed separately so it stops tripping people. Thanks for dropping the full traceback — that's the good stuff 🙏

Ping me anytime. Looking forward to the PR 🙌

[martn2023]

Hey @grooverLab , can I please get feedback on the work I submitted? Thanks.