Changeset 0.22.8 (#150)

server/database/migrations/sqlite/015_health.sql

@@ -0,0 +1,17 @@
+-- Chat Switchboard — 015 Tool Health (SQLite)
+
+CREATE TABLE IF NOT EXISTS tool_health (
+    id              TEXT PRIMARY KEY,
+    tool_name       TEXT NOT NULL,
+    window_start    TEXT NOT NULL,
+    request_count   INTEGER NOT NULL DEFAULT 0,
+    error_count     INTEGER NOT NULL DEFAULT 0,
+    total_latency_ms INTEGER NOT NULL DEFAULT 0,
+    max_latency_ms  INTEGER NOT NULL DEFAULT 0,
+    last_error      TEXT,
+    last_error_at   TEXT,
+    updated_at      TEXT NOT NULL DEFAULT (datetime('now')),
+    UNIQUE (tool_name, window_start)
+);
+
+CREATE INDEX IF NOT EXISTS idx_tool_health_window ON tool_health(tool_name, window_start);