Switch autoloop workflow pre-steps from Python to JavaScript (Node.js)

[Copilot]

Replace python3 heredocs with node heredocs in both workflow files, aligning the pre-step runtime with actions/github-script.

Workflow changes

• workflows/autoloop.md: Scheduling pre-step rewritten in JS — parseMachineState, parseSchedule, getProgramName, readProgramState, program scanning, issue fetching via fetch(), selection logic
• workflows/sync-branches.md: Branch sync rewritten in JS using child_process.spawnSync for git operations

Before:

python3 - << 'PYEOF'import os, json, re, glob, sysimport urllib.request, urllib.errorfrom datetime import datetime, timezone, timedelta# ...PYEOF

After:

node - << 'JSEOF'const fs = require('fs');const path = require('path');// ...async function main() { /* ... */ }main().catch(err => { console.error(err.message || err); process.exit(1); });JSEOF

Test infrastructure

• tests/conftest.py: Extracts JS functions from the JSEOF heredoc, writes to a temp .cjs module, calls via node subprocess. Python wrappers handle type conversion (e.g., parseSchedule returns ms → wrapped to timedelta).
• tests/test_scheduling.py: Updated docstrings only; all 88 tests pass unchanged against the JS implementation.

[mrjf]

@copilot resolve the merge conflicts in this pull request

[Copilot]

@copilot resolve the merge conflicts in this pull request

Merge conflicts resolved in d8dda09. The only real conflict was in .gitignore (add/add — kept both entries). workflows/autoloop.md auto-merged cleanly with the upstream experiment log removal from PR #8. All 88 tests pass after the merge.