t1095: Extend pattern tracker schema with strategy, quality, failure_mode, and token columns

.agents/scripts/memory/_common.sh

@@ -161,6 +161,33 @@ EOF
 		db "$MEMORY_DB" "ALTER TABLE learning_access ADD COLUMN graduated_at TEXT DEFAULT NULL;" || echo "[WARN] Failed to add graduated_at column (may already exist)" >&2
 	fi
 
+	# Create pattern_metadata table if missing (t1095 migration)
+	# Companion table for pattern records — stores strategy, quality, failure_mode, tokens
+	local has_pattern_metadata
+	has_pattern_metadata=$(db "$MEMORY_DB" "SELECT COUNT(*) FROM sqlite_master WHERE type='table' AND name='pattern_metadata';" 2>/dev/null || echo "0")
+	if [[ "$has_pattern_metadata" == "0" ]]; then
+		log_info "Creating pattern_metadata table (t1095)..."
+		db "$MEMORY_DB" <<'EOF'
+CREATE TABLE IF NOT EXISTS pattern_metadata (
+    id TEXT PRIMARY KEY,
+    strategy TEXT DEFAULT 'normal' CHECK(strategy IN ('normal', 'prompt-repeat', 'escalated')),
+    quality TEXT DEFAULT NULL CHECK(quality IS NULL OR quality IN ('ci-pass-first-try', 'ci-pass-after-fix', 'needs-human')),
+    failure_mode TEXT DEFAULT NULL CHECK(failure_mode IS NULL OR failure_mode IN ('hallucination', 'context-miss', 'incomplete', 'wrong-file', 'timeout')),
+    tokens_in INTEGER DEFAULT NULL,
+    tokens_out INTEGER DEFAULT NULL
+);
+EOF
+		# Backfill existing pattern records with default strategy='normal'
+		local pattern_types="$PATTERN_TYPES_SQL"
+		local backfill_count
+		backfill_count=$(db "$MEMORY_DB" "SELECT COUNT(*) FROM learnings WHERE type IN ($pattern_types);" 2>/dev/null || echo "0")
+		if [[ "$backfill_count" -gt 0 ]]; then
+			db "$MEMORY_DB" "INSERT OR IGNORE INTO pattern_metadata (id, strategy) SELECT id, 'normal' FROM learnings WHERE type IN ($pattern_types);"
+			log_success "Backfilled $backfill_count existing pattern records into pattern_metadata"
+		fi
+		log_success "pattern_metadata table created (t1095)"
+	fi
+
 	return 0
 }
 
@@ -255,6 +282,17 @@ CREATE TABLE IF NOT EXISTS learning_relations (
     relation_type TEXT CHECK(relation_type IN ('updates', 'extends', 'derives')),
     created_at TEXT DEFAULT CURRENT_TIMESTAMP
 );
+
+-- Extended pattern metadata (t1095) — companion table for pattern records
+-- Stores structured fields that can't go in FTS5 (strategy, quality, failure_mode, tokens)
+CREATE TABLE IF NOT EXISTS pattern_metadata (
+    id TEXT PRIMARY KEY,
+    strategy TEXT DEFAULT 'normal' CHECK(strategy IN ('normal', 'prompt-repeat', 'escalated')),
+    quality TEXT DEFAULT NULL CHECK(quality IS NULL OR quality IN ('ci-pass-first-try', 'ci-pass-after-fix', 'needs-human')),
+    failure_mode TEXT DEFAULT NULL CHECK(failure_mode IS NULL OR failure_mode IN ('hallucination', 'context-miss', 'incomplete', 'wrong-file', 'timeout')),
+    tokens_in INTEGER DEFAULT NULL,
+    tokens_out INTEGER DEFAULT NULL
+);
 EOF
 		log_success "Database initialized with relational versioning support"
 	else