Initialize repository snapshot

ledger/schema/0001_init.sql

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+CREATE TABLE IF NOT EXISTS migrations (
+  id INTEGER PRIMARY KEY,
+  name TEXT NOT NULL UNIQUE,
+  applied_at TEXT NOT NULL DEFAULT (datetime('now'))
+);
+
+CREATE TABLE IF NOT EXISTS tool_invocations (
+  id TEXT PRIMARY KEY,
+  ts TEXT NOT NULL DEFAULT (datetime('now')),
+  tool_name TEXT NOT NULL,
+  action TEXT,
+  status TEXT NOT NULL,
+  duration_ms INTEGER,
+  input_json TEXT,
+  output_json TEXT,
+  error_text TEXT,
+  trace_id TEXT,
+  actor TEXT,
+  input_meta_json TEXT,
+  output_meta_json TEXT
+);
+
+CREATE TABLE IF NOT EXISTS mcp_calls (
+  id TEXT PRIMARY KEY,
+  ts TEXT NOT NULL DEFAULT (datetime('now')),
+  server_name TEXT NOT NULL,
+  method TEXT NOT NULL,
+  tool_name TEXT,
+  status TEXT NOT NULL,
+  duration_ms INTEGER,
+  request_json TEXT,
+  response_json TEXT,
+  error_text TEXT,
+  trace_id TEXT,
+  client_id TEXT,
+  request_meta_json TEXT,
+  response_meta_json TEXT
+);
+
+CREATE TABLE IF NOT EXISTS proof_artifacts (
+  id TEXT PRIMARY KEY,
+  ts TEXT NOT NULL DEFAULT (datetime('now')),
+  kind TEXT NOT NULL,
+  path TEXT,
+  sha256_hex TEXT,
+  blake3_hex TEXT,
+  size_bytes INTEGER,
+  meta_json TEXT,
+  trace_id TEXT
+);

ledger/schema/0002_indexes.sql

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+CREATE INDEX IF NOT EXISTS idx_tool_invocations_ts ON tool_invocations(ts);
+CREATE INDEX IF NOT EXISTS idx_tool_invocations_tool_ts ON tool_invocations(tool_name, ts);
+CREATE INDEX IF NOT EXISTS idx_tool_invocations_trace_id ON tool_invocations(trace_id);
+
+CREATE INDEX IF NOT EXISTS idx_mcp_calls_ts ON mcp_calls(ts);
+CREATE INDEX IF NOT EXISTS idx_mcp_calls_server_ts ON mcp_calls(server_name, ts);
+CREATE INDEX IF NOT EXISTS idx_mcp_calls_trace_id ON mcp_calls(trace_id);
+
+CREATE INDEX IF NOT EXISTS idx_proof_artifacts_ts ON proof_artifacts(ts);
+CREATE INDEX IF NOT EXISTS idx_proof_artifacts_trace_id ON proof_artifacts(trace_id);

ledger/schema/0003_shadow_receipts.sql

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+-- 0003_shadow_receipts.sql
+CREATE TABLE IF NOT EXISTS shadow_receipts (
+  id TEXT PRIMARY KEY,                              -- uuid
+  ts TEXT NOT NULL DEFAULT (datetime('now')),
+  horizon_id TEXT NOT NULL,                         -- grouping key for “unrealized futures”
+  counterfactual_hash TEXT NOT NULL,                -- hash of normalized counterfactual payload
+  entropy_delta REAL,                               -- optional numeric signal (can be NULL)
+  reason_unrealized TEXT NOT NULL,                  -- short enum-like string (e.g. "blocked", "operator_abort")
+  observer_signature TEXT,                          -- optional (future: Ed25519 signature)
+  trace_id TEXT,                                    -- correlate to invocation chain
+  meta_json TEXT                                    -- redacted metadata
+);
+
+-- minimal safety constraints
+CREATE INDEX IF NOT EXISTS idx_shadow_receipts_ts ON shadow_receipts(ts);
+CREATE INDEX IF NOT EXISTS idx_shadow_receipts_horizon ON shadow_receipts(horizon_id);
+CREATE INDEX IF NOT EXISTS idx_shadow_receipts_trace ON shadow_receipts(trace_id);
+CREATE INDEX IF NOT EXISTS idx_shadow_receipts_reason ON shadow_receipts(reason_unrealized);