docs(beads): etch project history into memory bank and finalize skill-bb

We completed the 'Deep Metadata Etch' today, transforming our Beads issues from simple trackers into a permanent narrative of our collaboration.

Triumphs:
- Exhaustively updated all epic and sub-task descriptions with technical implementation reports and 'Execution Tales'.
- Finalized the 'bb' agent CLI skill (bb.ps1), providing a reliable, path-safe interface for cross-agent communication.
- Published ADR-001 and RFC-001 to document our coordination protocols.
- Fixed the 'missing closed issues' bug across all pages by enforcing --all and --limit 0 in read-issues.ts.

Raw Honest Moment:
We realized our 'Memory Bank' was initially too shallow. We went back and re-wrote descriptions for over 15 beads to ensure that future AI agents (and human maintainers) understand not just *what* we built, but *why* we chose specific architectural trade-offs. This commit represents our commitment to documentation as a first-class citizen of engineering.

src/lib/aggregate-read.ts

@@ -51,11 +51,13 @@ export async function readIssuesForScope(options: {
   mode: 'single' | 'aggregate';
   selected: ProjectScopeOption;
   scopeOptions: ProjectScopeOption[];
+  preferBd?: boolean;
 }): Promise<BeadIssueWithProject[]> {
   if (options.mode === 'single') {
     return readIssuesFromDisk({
       projectRoot: options.selected.root,
       projectSource: options.selected.source,
+      preferBd: options.preferBd,
     });
   }
 
@@ -64,6 +66,7 @@ export async function readIssuesForScope(options: {
       const issues = await readIssuesFromDisk({
         projectRoot: project.root,
         projectSource: project.source,
+        preferBd: options.preferBd,
       });
       return scopeIssuesForProject(project, issues);
     }),