Let a file resource name a template file in its module's repository

A file's text may live in files/<name> beside the manifest instead of inline,
so modules can move their files out of module.json (ADR 0349 clause 2, issue
654). The build packs files/ into the module's declared archive and reads each
template back from the packed bytes, proven by the digest, into content: the
manifest the mesh holds, composition and the node-engine stay as they are.
module check, the merge gate and module add read templates from the tree beside
the manifest, so a change to a template alone is judged. A file naming both
template and content, a template outside files/, a missing one, and a held
manifest that still names one are refused by name.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/catalogue/build.go

@@ -35,6 +35,10 @@ type Built struct {
 	// Launchers are, for a bundle in an interpreted language, the executable the build wrote beside
 	// each entrypoint, by entrypoint (novox/hq ADR 0193): what the node's runtime starts to serve it.
 	Launchers map[string]string
+	// Texts are, for the archive a module packs its templates into (TemplatesArtifact), each file's text as the
+	// build read it back from the packed archive, by its path inside it (novox/hq ADR 0349 §2). Never carried on
+	// the wire or kept: Resolve reads them into the files' content, which is what the mesh holds.
+	Texts map[string]string `json:"-"`
 }
 
 // Resolve fills a manifest's resources in from what was built.
@@ -71,6 +75,26 @@ func (m Manifest) Resolve(built []Built) (Manifest, error) {
 			m.Module, strings.Join(missing, " and "), oneOrOther(len(missing)))
 	}
 
+	// **Each template's text, as the build read it back from its templates archive** (novox/hq ADR 0349 §2): into
+	// the file's content, so what the mesh holds and composes is what the same text inline would be.
+	if m.Templated() {
+		name := TemplatesArtifact(m)
+		texts := by[name].Texts
+		if name == "" || texts == nil {
+			return Manifest{}, fmt.Errorf("%s names templates, and the build carried no text read back from the "+
+				"archive it packs %s/ into (%q): the builder that built it does not read templates",
+				m.Module, TemplatesDir, name)
+		}
+		filled, err := fillTemplates(m.Module, m.Resources, func(template string) (string, bool) {
+			t, ok := texts[strings.TrimPrefix(template, TemplatesDir+"/")]
+			return t, ok
+		}, fmt.Sprintf("the archive %q", name))
+		if err != nil {
+			return Manifest{}, err
+		}
+		m.Resources = filled
+	}
+
 	out := m
 	out.Build = nil
 	out.Resources = nil

internal/catalogue/manifest.go

@@ -1853,6 +1853,9 @@ func ParseManifest(raw []byte) (Manifest, error) {
 		}
 	}
 	problems = append(problems, m.Build.problems(m.Module)...)
+	// A file's text in a template file of the module's repository (novox/hq ADR 0349 §2): only a file, never beside
+	// content, only under files/, and packed by the module's build.
+	problems = append(problems, templateProblems(m)...)
 	problems = append(problems, undeliveredBundles(m)...)
 	// **What provides the artifact store cannot be delivered through it** (novox/hq 04-ISSUES/029).
 	//