docs(template): @requiredTags is prompt-only in verify — fix the C#/TS constant doc (#231)

The `@requiredTags` constant doc claimed "Generic — not prompt-only: any rendered artifact
(email, export, prompt) can carry a tag contract", but `verify --templates` enforces it
ONLY on the prompt path in every port (the email/document output gate deliberately does not
apply per-part slot/tag rules — the #193/#230 cross-port consensus). Corrected the comment in
both C# (TemplateConstants.cs) and TS (template-constants.ts, which carried the identical
claim) to state the actual behavior: the attr may be authored on any template, but verify
checks it for prompts only.

Doc-only; no behavior change. Resolution (b) of #231 — the prompt-only behavior is intentional
and consistent cross-port, so the doc was the thing that was wrong (not the behavior).

Closes #231.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XeGSV3StPCcJGZNNJ4ZfAb

Author: dmealing

server/csharp/MetaObjects/Template/TemplateConstants.cs

@@ -49,9 +49,10 @@ public static class TemplateConstants
     public const string TEMPLATE_ATTR_MAX_CHARS   = "maxChars";
     public const string TEMPLATE_ATTR_OWNER       = "owner";
     public const string TEMPLATE_ATTR_SINCE       = "since";
-    // Output tags the rendered text must contain (drives the verify output-tag check).
-    // Generic — not prompt-only: any rendered artifact (email, export, prompt) can
-    // carry a tag contract a downstream parser depends on.
+    // Output tags a template.prompt's rendered text must contain. `verify --templates` enforces
+    // this ONLY on the prompt path — the email/document output gate does not apply per-part
+    // slot/tag rules (the #193/#230 cross-port consensus). The attr may be authored on any
+    // template, but verify checks it for prompts only.
     public const string TEMPLATE_ATTR_REQUIRED_TAGS = "requiredTags";
 
     // --- @kind + email part-refs (template.output only) ---

server/typescript/packages/metadata/src/template/template-constants.ts

@@ -36,9 +36,10 @@ export const TEMPLATE_ATTR_FORMAT = "format";
 export const TEMPLATE_ATTR_MAX_CHARS = "maxChars";
 export const TEMPLATE_ATTR_OWNER = "owner";
 export const TEMPLATE_ATTR_SINCE = "since";
-// Output tags the rendered text must contain (drives the verify output-tag check).
-// Generic — not prompt-only: any rendered artifact (email, export, prompt) can
-// carry a tag contract a downstream parser depends on.
+// Output tags a template.prompt's rendered text must contain. `verify --templates` enforces
+// this ONLY on the prompt path — the email/document output gate does not apply per-part slot/tag
+// rules (the #193/#230 cross-port consensus). The attr may be authored on any template, but
+// verify checks it for prompts only.
 export const TEMPLATE_ATTR_REQUIRED_TAGS = "requiredTags";
 
 // --- @kind + email part-refs (template.output only) ---