seed: land a venture built elsewhere on yolopreneur.lol

Actions -> seed -> Run workflow with a slug, the URL(s) of a .tgz whose top folder is the slug, and its sha256
(plus a name and a one-liner for a new venture). seed.py checks the bundle (sha256, plain files and folders under
<slug>/ only, an index.html, 64 MB at most), copies it over ventures/<slug>/ on gh-pages in one commit, adds or
refreshes the venture's line in ventures/ventures.json without changing the ledger's layout, and the workflow asks
Teahub pages to pull. Nothing in the bundle runs; inputs reach the script through the environment. It shares the
venture loop's concurrency group, since both write gh-pages. test_seed.py runs in CI.

First use: House Hand at househand.yolopreneur.lol, built on hb-5.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01K9wtGiGEeq1H5DA3T88PRe

.github/workflows/ci.yml

@@ -18,3 +18,4 @@ jobs:
         with:
           node-version: 22
       - run: python3 .github/time/test_time.py
+      - run: python3 .github/time/test_seed.py