[Self-Heal] Add self-scheduling auto-repair workflow

[badMade]

Self-Heal Coding Agent Workflow

Adds an autonomous self-healing pipeline to continuously check project health, perform idempotent auto-repairs, and self-schedule based on repository telemetry.

Included Features

1. Healthcheck Gate (scripts/healthcheck.mjs): Verifies types, tests, and build.
2. Idempotent Repair (scripts/self_heal.mjs): Executes npm ci, format updates, test snapshots, and asset regenerations.
3. Telemetry Self-Scheduling (scripts/compute_schedule.mjs): Modulates schedule based on commit activity.
4. Triggers (self-heal.yml): Can be run via Cron, CI failure workflow_run, or manual dispatch.
5. Safeguards: Prevent branch loops, prevent partial fixes, and scan out accidental secret staging.

Validation

Verified manually via node --check, running npm install, and locally running the healthchecks. No new test failures were introduced.

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PR created automatically by Jules for task 9237814936222548749 started by @badMade

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[gemini-code-assist]

Code Review

This pull request introduces an automated self-healing CI pipeline, including scripts for health checks, repair automation, and autonomous scheduling based on repository telemetry. The reviewer identified critical issues with invalid dependency versions for ESLint and Prettier that would prevent successful installation. Furthermore, corrections were suggested for incorrect string escaping and regex patterns in the scheduling script, along with an improvement to the self-heal script's exit logic to avoid unnecessary CI failures when the system is already healthy.

[gemini-code-assist]

ESLint version ^10.4.0 is not a stable release (current is 9.x). This will likely cause installation failures in most environments unless a custom registry is being used.

Suggested change

	"eslint": "^10.4.0",
	"eslint": "^9.17.0",

[gemini-code-assist]

Prettier version ^3.8.3 does not exist in the public npm registry (current stable is 3.5.x). This will cause installation failures.

Suggested change

	"prettier": "^3.8.3",
	"prettier": "^3.5.0",

[gemini-code-assist]

The split('\\n') call attempts to split the string by a literal backslash followed by the character 'n'. To correctly count lines from the git log output, use split('\n').

Suggested change

	commitCount = result.split('\\n').filter(Boolean).length;
	commitCount = result.split('\n').filter(Boolean).length;

[gemini-code-assist]

In a regular expression literal, \\s matches a literal backslash and the character 's'. To match whitespace characters, use \s.

Suggested change

	const regex = /cron:\\s*['"].*?['"]\\s*# AUTO-UPDATED/g;
	const regex = /cron:\s*['"].*?['"]\s*# AUTO-UPDATED/g;

[gemini-code-assist]

The script currently exits with code 1 if no repair diff was generated, even if the repository is already healthy. This will cause unnecessary CI failures. The script should exit with code 0 if the system is healthy at the end of the pipeline.

  // If we exhausted all steps, check if the system is healthy
  if (checkHealth()) {
    console.log('\\n✅ Self-heal pipeline completed and system is healthy. Exiting 0.');
    process.exit(0);
  }

  console.log('\\n❌ Self-heal pipeline completed but did not find a working repair.');
  process.exit(1);