fix(ready): exclude molecule steps from bd ready by default (#1246)

* fix(ready): exclude molecule steps from bd ready by default (GH#1239)

Add ID prefix constants (IDPrefixMol, IDPrefixWisp) to types.go as single
source of truth. Update pour.go and wisp.go to use these constants.

GetReadyWork now excludes issues with -mol- in their ID when no explicit
type filter is specified. Users can still see mol steps with --type=task.

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

* feat(ready): config-driven ID pattern exclusion (GH#1239)

Add ready.exclude_id_patterns config for excluding IDs from bd ready.
Default patterns: -mol-, -wisp- (molecule steps and wisps).

Changes:
- Add IncludeMolSteps to WorkFilter for internal callers
- Update findGateReadyMolecules and getMoleculeCurrentStep to use it
- Make exclusion patterns config-driven via ready.exclude_id_patterns
- Remove hardcoded MolStepIDPattern() in favor of config
- Add test for custom patterns (e.g., gastown's -role-)

Usage: bd config set ready.exclude_id_patterns "-mol-,-wisp-,-role-"

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

* docs: remove -role- example from ready.go comments

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

* docs: remove GH#1239 references from code comments

Issue references belong in commit messages, not code.

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

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

cmd/bd/wisp.go

@@ -262,8 +262,8 @@ func runWispCreate(cmd *cobra.Command, args []string) {
 	}
 
 	// Spawn as ephemeral in main database (Ephemeral=true, skips JSONL export)
-	// Use "wisp" prefix for distinct visual recognition
-	result, err := spawnMolecule(ctx, store, subgraph, vars, "", actor, true, "wisp")
+	// Use wisp prefix for distinct visual recognition (see types.IDPrefixWisp)
+	result, err := spawnMolecule(ctx, store, subgraph, vars, "", actor, true, types.IDPrefixWisp)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Error creating wisp: %v\n", err)
 		os.Exit(1)