fix: mol run loads all hierarchical children + supports title lookup (bd-c8d5, bd-drcx)

Two issues fixed:

1. bd-c8d5: mol run only created partial children from proto
   - Root cause: children with missing/wrong dependencies were not loaded
   - Fix: loadDescendants now uses two strategies:
     - Strategy 1: Check dependency records for parent-child relationships
     - Strategy 2: Find hierarchical children by ID pattern (parent.N)
   - This catches children that may have broken dependency data

2. bd-drcx: mol run now supports proto lookup by title
   - Can use: bd mol run mol-polecat-work --var issue=gt-xxx
   - Or by ID: bd mol run gt-lwuu --var issue=gt-xxx
   - Title matching is case-insensitive and supports partial matches
   - Shows helpful error on ambiguous matches

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

cmd/bd/mol_run.go

@@ -10,11 +10,10 @@ import (
 	"github.com/steveyegge/beads/internal/storage/sqlite"
 	"github.com/steveyegge/beads/internal/types"
 	"github.com/steveyegge/beads/internal/ui"
-	"github.com/steveyegge/beads/internal/utils"
 )
 
 var molRunCmd = &cobra.Command{
-	Use:   "run <proto-id>",
+	Use:   "run <proto-id-or-title>",
 	Short: "Spawn proto and start execution (spawn + assign + pin)",
 	Long: `Run a molecule by spawning a proto and setting up for durable execution.
 
@@ -24,6 +23,9 @@ This command:
   3. Sets root status to in_progress
   4. Pins the root issue for session recovery
 
+The proto can be specified by ID or title. Title matching is case-insensitive
+and supports partial matches (e.g., "polecat" matches "mol-polecat-work").
+
 After a crash or session reset, the pinned root issue ensures the agent
 can resume from where it left off by checking 'bd ready'.
 
@@ -33,8 +35,9 @@ This is essential for wisp molecule spawning where templates exist in the main
 database but instances should be ephemeral.
 
 Example:
-  bd mol run mol-version-bump --var version=1.2.0
-  bd mol run bd-qqc --var version=0.32.0 --var date=2025-01-01
+  bd mol run mol-polecat-work --var issue=gt-xxx     # By title
+  bd mol run gt-lwuu --var issue=gt-xxx              # By ID
+  bd mol run polecat --var issue=gt-xxx              # By partial title
   bd --db .beads-wisp/beads.db mol run mol-patrol --template-db .beads/beads.db`,
 	Args: cobra.ExactArgs(1),
 	Run:  runMolRun,
@@ -97,10 +100,10 @@ func runMolRun(cmd *cobra.Command, args []string) {
 		defer func() { _ = templateStore.Close() }()
 	}
 
-	// Resolve molecule ID from template store
-	moleculeID, err := utils.ResolvePartialID(ctx, templateStore, args[0])
+	// Resolve molecule ID from template store (supports both ID and title - bd-drcx)
+	moleculeID, err := resolveProtoIDOrTitle(ctx, templateStore, args[0])
 	if err != nil {
-		fmt.Fprintf(os.Stderr, "Error resolving molecule ID %s: %v\n", args[0], err)
+		fmt.Fprintf(os.Stderr, "Error resolving molecule %s: %v\n", args[0], err)
 		os.Exit(1)
 	}