feat: add deterministic preview rendering

src/docforge/models.py

@@ -18,6 +18,9 @@ class Limits:
     max_changesets: int = 1_000
     max_changeset_operations: int = 100
     max_changeset_bytes: int = 1_000_000
+    max_render_views: int = 100
+    max_template_bytes: int = 1_000_000
+    max_render_bytes: int = 1_000_000
 
 
 @dataclass(frozen=True)
@@ -27,6 +30,23 @@ class ProposalWriter:
     operations: tuple[str, ...]
 
 
+@dataclass(frozen=True)
+class RenderView:
+    view_id: str
+    renderer: str
+    template_path: Path
+    output_path: Path
+    title: str
+    families: tuple[str, ...]
+
+
+@dataclass(frozen=True)
+class RenderConfig:
+    template_root: Path
+    preview_root: Path
+    views: tuple[RenderView, ...]
+
+
 @dataclass(frozen=True)
 class ContextProfile:
     profile_id: str
@@ -52,6 +72,7 @@ class ProjectDescriptor:
     index_path: Path
     changeset_root: Path
     proposal_writers: tuple[ProposalWriter, ...]
+    render: RenderConfig | None
     allowed_relations: tuple[str, ...]
     profiles: tuple[ContextProfile, ...]
     limits: Limits