fix(countdown): make every offered font work, and document every setting

[ChuckBuilds]

Fifth plugin in the README pass. Still avoiding the sports scoreboards while #359 is open.

Only two of five fonts worked

Hashing one render per family showed three producing byte-identical output — the default face:

9bd0dbce77: ['press_start']
b59efdfd01: ['four_by_six']
d6e4d86478: ['tom_thumb', 'tiny', 'picopixel']

Two separate causes:

• tiny and picopixel have no font file in the core or the plugin. Phantom options; removed.
• Everything .bdf hit the pixel-size problem — a bitmap face exists at exactly one size and FreeType rejects any other, so asking for font_size (8) failed every time. Now loaded at the size the file's own PIXEL_SIZE header declares.

That alone wasn't enough for five_by_seven, and the reason is worth knowing: the plugin only reached its own loader when the core FontManager's catalog missed a family. The catalog has five_by_seven, so resolve_font returned a silently degraded default and the plugin trusted it. Bitmap families now use the plugin's loader regardless of what the catalog claims. tom_thumb is also wired up — tom-thumb.bdf was always shipped, just absent from the family map.

All four now render distinctly, verified the same way:

9bd0dbce77 press_start   |  b59efdfd01 four_by_six
eb2d9294c8 five_by_seven |  0ed03a8f38 tom_thumb

Net: 2 of 5 working → 4 of 4 working, rather than just deleting the broken ones.

There is a latent core issue behind this: FontManager.resolve_font degrades to the default face for any .bdf without signalling it. I worked around it in the plugin rather than widening this PR into the core repo — say the word if you'd like the core fix too.

The old README documented strings the code never produces

It promised "1 Day" and "TODAY!" (shown in bright yellow). Neither exists anywhere in manager.py. The real ladder, now shown as six real renders:

Time to target	Renders as
> 2 days	N Days
1–2 days	Tomorrow (no number)
1–24 hours	Nh Nm
1–60 minutes	Nm
< 1 minute	NOW!
passed	Nd ago, hidden unless show_expired

Also corrected: the stale Pillow >= 9.0.0 requirement is actually >= 12.2.0.

Audits before opening (as requested)

• Config tokens vs the old README: none dropped
• All 40 schema leaves documented (including the per-entry layout and style override objects)
• No broken TOC anchors
• Section-heading check surfaced the dependency and technical notes — restored

Worth noting the section check is a heuristic and flagged ten headings, most of them false positives once I read the content. It's a prompt to go look, not an oracle.

Verification

• python scripts/check_plugin.py --plugin countdown — 8/8 PASS, goldens unchanged (the harness pins press_start, a .ttf, so the font work doesn't move them)
• python scripts/run_plugin_tests.py countdown — 1 passed
• render_docs_assets.py --plugin countdown --check — images match
• check_module_collisions.py — OK across 43 plugins
• manifest bumped 3.2.1 → 3.3.0, plugins.json regenerated

🤖 Generated with Claude Code

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Up to standards ✅

🟢 Issues 0 issues

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🟢 Metrics 13 complexity

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Complexity	13

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