Introduce repository-backed capability workspaces

- define and validate the capability and resource-lock languages
- provision workspace source repositories through Central Gitea
- build package runtimes from pinned standalone sources
- replace legacy schema compilation with workspace persistence plans
- add stable optimistic registers and Automerge CRDT documents
- modernize TypeScript/Nix package builds and runtime activation readiness

proto/quixos/package.proto

@@ -2,70 +2,14 @@ syntax = "proto3";
 
 package quixos;
 
-import "camino/schema.proto";
-import "quixos/refs.proto";
-
-message PackageRef {
-  string package_namespace = 1;
-  string package_name = 2;
-  uint32 descriptor_version = 3;
-  string version_ref = 4;
-}
-
 message PackageDescriptor {
-  string package_namespace = 1;
-  string package_name = 2;
-  uint32 descriptor_version = 3;
-  uint32 interface_compatible_back_to = 4;
-  uint32 runner_compatible_back_to = 5;
-  string source_repo = 6;
-  string source_ref = 7;
-  string resolved_source_ref = 8;
-  string server_installable = 9;
-  string runtime_protocol_version = 10;
-  repeated ClassExport class_exports = 11;
-  repeated FunctionExport function_exports = 12;
-  repeated ComponentExport component_exports = 13;
-  repeated SidecarExport sidecar_exports = 14;
-  repeated PackageDependency dependencies = 15;
+  string package_id = 1;
+  string package_revision_id = 2;
+  string runtime_protocol_version = 3;
+  repeated RuntimeExport exports = 4;
 }
 
-enum FunctionCapabilityKind {
-  FUNCTION_CAPABILITY_KIND_UNSPECIFIED = 0;
-  METHOD = 1;
-  FIELD_RESOLVER = 2;
-  MIGRATION = 3;
-  CONSTRUCTOR = 4;
-}
-
-message ClassExport {
-  camino.SymbolRef class_id = 1;
-  string source_file = 2;
-}
-
-message FunctionExport {
-  FunctionRef function = 1;
-  string input_type = 2;
-  string output_type = 3;
-  uint32 interface_version = 4;
-  uint32 interface_compatible_back_to = 5;
-  FunctionCapabilityKind capability_kind = 6;
-}
-
-message ComponentExport {
-  string symbol = 1;
-  string props_type = 2;
-  repeated camino.SymbolRef supported_classes = 3;
-}
-
-message SidecarExport {
-  string symbol = 1;
-  string side_effect_mode = 2;
-}
-
-message PackageDependency {
-  PackageRef package = 1;
-  uint32 interface_compatible_back_to = 2;
-  bool refactor_required = 3;
-  string compatibility_note = 4;
+message RuntimeExport {
+  string export_id = 1;
+  string runtime_symbol = 2;
 }