[wip] universal workers

migrations/20250101000012_agent_runtime_detection.sql

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+-- Migration: 000012_agent_runtime_detection
+-- Adds columns to support agent auto-detected runtimes
+
+-- Track whether a runtime was auto-registered by an agent
+-- (vs. loaded from a pack's YAML file during pack registration)
+ALTER TABLE runtime ADD COLUMN IF NOT EXISTS auto_detected BOOLEAN NOT NULL DEFAULT FALSE;
+
+-- Store detection configuration for auto-discovered runtimes.
+-- Used by agents to identify how they discovered the runtime and
+-- enables re-verification on restart.
+-- Example: { "binaries": ["ruby", "ruby3.2"], "version_command": "--version",
+--            "version_regex": "ruby (\\d+\\.\\d+\\.\\d+)",
+--            "detected_path": "/usr/bin/ruby",
+--            "detected_version": "3.3.0" }
+ALTER TABLE runtime ADD COLUMN IF NOT EXISTS detection_config JSONB NOT NULL DEFAULT '{}'::jsonb;
+
+-- Index for filtering auto-detected vs. pack-registered runtimes
+CREATE INDEX IF NOT EXISTS idx_runtime_auto_detected ON runtime(auto_detected);
+
+-- Comments
+COMMENT ON COLUMN runtime.auto_detected IS 'Whether this runtime was auto-registered by an agent (true) vs. loaded from a pack YAML (false)';
+COMMENT ON COLUMN runtime.detection_config IS 'Detection metadata for auto-discovered runtimes: binaries probed, version regex, detected path/version';