refactor(templates): unify naming, single-source metadata, honest AI copy

[xuyushun441-sys]

What & why

Marketplace/catalog cleanup across the 9 templates — prompted by inconsistent naming on the marketplace cards and AI copy that oversold scaffolded features.

Naming

• Drop the "AI" prefix from displayNames: AI Helpdesk → Helpdesk, AI Project Management → Project Management. AI stays in descriptions/field labels, not the name.
• Aligned the name across the surfaces that had drifted: manifest.json displayName, config.ts manifest.name, *.app.ts nav label, and every locale translation. (e.g. project's pm.app.ts already said "Project Management" but the en/zh translations overrode it back to "AI …" — the translation wins at runtime.)
• Reconciled hr name drift (config.ts manifest.name "HR" → "Human Resources").

Single source of truth

• Removed the dead objectstack.marketplace block from all 9 package.json files. The publish path (scripts/publish-template.mjs) reads objectstack.manifest.json only; these copies were unread and still carried the stale category:"starter" that fix(templates): replace invalid category: "starter" with valid domain categories #73 removed from the manifests. project keeps objectstack.port.

Honesty

• Templates that ship AI as a scaffold no longer market it as delivered:
  • helpdesk — triage is a deterministic baseline (ai_summary = description.slice(0, 280)), not a model.
  • project — the forecasting flow node is a STUB; ai_* seed values are illustrative. Field group relabelled "AI Predictions (scaffolded)".
• Added docs/ROADMAP.md capturing the AI implementation plan (route AI through the platform model registry instead of raw api.openai.com, degrade honestly when no model is configured, finish one flagship) plus other findings (content over-charter, todo/project overlap, category facet casing).

Not changed

• Category slugs left as-is: the visible facet-casing inconsistency is a marketplace-UI label-map gap, and changing the hr slug would regress the UI's existing hr → "Human Resources" mapping (noted in the roadmap).

Verification

• tsc --noEmit passes for the two packages with .ts changes (helpdesk, project).
• All manifests / package.json parse as valid JSON.
• No runtime behavior change. Catalog display_name updates on the next publish run (upserted on every publish, not gated by the version number).

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