change capture

migrations/20250101000002_pack_system.sql

@@ -1,5 +1,5 @@
 -- Migration: Pack System
--- Description: Creates pack and runtime tables
+-- Description: Creates pack, runtime, and runtime_version tables
 -- Version: 20250101000002
 
 -- ============================================================================
@@ -160,3 +160,85 @@ COMMENT ON COLUMN runtime.distributions IS 'Runtime distribution metadata includ
 COMMENT ON COLUMN runtime.installation IS 'Installation requirements and instructions including package managers and setup steps';
 COMMENT ON COLUMN runtime.installers IS 'Array of installer actions to create pack-specific runtime environments. Each installer defines commands to set up isolated environments (e.g., Python venv, npm install).';
 COMMENT ON COLUMN runtime.execution_config IS 'Execution configuration: interpreter, environment setup, and dependency management. Drives how the worker executes actions and how pack install sets up environments.';
+
+-- ============================================================================
+-- RUNTIME VERSION TABLE
+-- ============================================================================
+
+CREATE TABLE runtime_version (
+    id BIGSERIAL PRIMARY KEY,
+    runtime BIGINT NOT NULL REFERENCES runtime(id) ON DELETE CASCADE,
+    runtime_ref TEXT NOT NULL,
+
+    -- Semantic version string (e.g., "3.12.1", "20.11.0")
+    version TEXT NOT NULL,
+
+    -- Individual version components for efficient range queries.
+    -- Nullable because some runtimes may use non-numeric versioning.
+    version_major INT,
+    version_minor INT,
+    version_patch INT,
+
+    -- Complete execution configuration for this specific version.
+    -- This is NOT a diff/override — it is a full standalone config that can
+    -- replace the parent runtime's execution_config when this version is selected.
+    -- Structure is identical to runtime.execution_config (RuntimeExecutionConfig).
+    execution_config JSONB NOT NULL DEFAULT '{}'::jsonb,
+
+    -- Version-specific distribution/verification metadata.
+    -- Structure mirrors runtime.distributions but with version-specific commands.
+    -- Example: verification commands that check for a specific binary like python3.12.
+    distributions JSONB NOT NULL DEFAULT '{}'::jsonb,
+
+    -- Whether this version is the default for the parent runtime.
+    -- At most one version per runtime should be marked as default.
+    is_default BOOLEAN NOT NULL DEFAULT FALSE,
+
+    -- Whether this version has been verified as available on the current system.
+    available BOOLEAN NOT NULL DEFAULT TRUE,
+
+    -- When this version was last verified (via running verification commands).
+    verified_at TIMESTAMPTZ,
+
+    -- Arbitrary version-specific metadata (e.g., EOL date, release notes URL,
+    -- feature flags, platform-specific notes).
+    meta JSONB NOT NULL DEFAULT '{}'::jsonb,
+
+    created TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+
+    -- Constraints
+    CONSTRAINT runtime_version_unique UNIQUE(runtime, version)
+);
+
+-- Indexes
+CREATE INDEX idx_runtime_version_runtime ON runtime_version(runtime);
+CREATE INDEX idx_runtime_version_runtime_ref ON runtime_version(runtime_ref);
+CREATE INDEX idx_runtime_version_version ON runtime_version(version);
+CREATE INDEX idx_runtime_version_available ON runtime_version(available) WHERE available = TRUE;
+CREATE INDEX idx_runtime_version_is_default ON runtime_version(is_default) WHERE is_default = TRUE;
+CREATE INDEX idx_runtime_version_components ON runtime_version(runtime, version_major, version_minor, version_patch);
+CREATE INDEX idx_runtime_version_created ON runtime_version(created DESC);
+CREATE INDEX idx_runtime_version_execution_config ON runtime_version USING GIN (execution_config);
+CREATE INDEX idx_runtime_version_meta ON runtime_version USING GIN (meta);
+
+-- Trigger
+CREATE TRIGGER update_runtime_version_updated
+    BEFORE UPDATE ON runtime_version
+    FOR EACH ROW
+    EXECUTE FUNCTION update_updated_column();
+
+-- Comments
+COMMENT ON TABLE runtime_version IS 'Specific versions of a runtime (e.g., Python 3.11, 3.12) with version-specific execution configuration';
+COMMENT ON COLUMN runtime_version.runtime IS 'Parent runtime this version belongs to';
+COMMENT ON COLUMN runtime_version.runtime_ref IS 'Parent runtime ref (e.g., core.python) for display/filtering';
+COMMENT ON COLUMN runtime_version.version IS 'Semantic version string (e.g., "3.12.1", "20.11.0")';
+COMMENT ON COLUMN runtime_version.version_major IS 'Major version component for efficient range queries';
+COMMENT ON COLUMN runtime_version.version_minor IS 'Minor version component for efficient range queries';
+COMMENT ON COLUMN runtime_version.version_patch IS 'Patch version component for efficient range queries';
+COMMENT ON COLUMN runtime_version.execution_config IS 'Complete execution configuration for this version (same structure as runtime.execution_config)';
+COMMENT ON COLUMN runtime_version.distributions IS 'Version-specific distribution/verification metadata';
+COMMENT ON COLUMN runtime_version.is_default IS 'Whether this is the default version for the parent runtime (at most one per runtime)';
+COMMENT ON COLUMN runtime_version.available IS 'Whether this version has been verified as available on the system';
+COMMENT ON COLUMN runtime_version.verified_at IS 'Timestamp of last availability verification';
+COMMENT ON COLUMN runtime_version.meta IS 'Arbitrary version-specific metadata';