refactor: remove bd mol catalog in favor of bd formula list (bd-ctmg)

- Delete mol_catalog.go (duplicate functionality)
- Update mol.go help text to point to bd formula list
- Update CLI_REFERENCE.md and MOLECULES.md docs
- Update deprecated template.go references

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

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

cmd/bd/mol.go

@@ -18,7 +18,6 @@ import (
 //   - Compound: Result of bonding
 //
 // Usage:
-//   bd mol catalog                        # List available protos
 //   bd mol show <id>                      # Show proto/molecule structure
 //   bd mol pour <id> --var key=value      # Instantiate proto → persistent mol
 //   bd mol wisp <id> --var key=value      # Instantiate proto → ephemeral wisp
@@ -48,14 +47,15 @@ The molecule metaphor:
   - Distilling extracts a proto from an ad-hoc epic
 
 Commands:
-  catalog    List available protos
   show       Show proto/molecule structure and variables
   pour       Instantiate proto as persistent mol (liquid phase)
   wisp       Instantiate proto as ephemeral wisp (vapor phase)
   bond       Polymorphic combine: proto+proto, proto+mol, mol+mol
   squash     Condense molecule to digest
   burn       Discard wisp
-  distill    Extract proto from ad-hoc epic`,
+  distill    Extract proto from ad-hoc epic
+
+Use "bd formula list" to list available formulas.`,
 }
 
 // =============================================================================