feat(domain): naming template engine (Jinja safe subset, MP variables, path layout)

- naming/engine: lexer/parser/AST/render for {{ }} / if-elif-else / whitelisted filters
  (default pad pad2 upper lower trim replace truncate date join); rejects for/set/attribute/
  subscript/call/~/% with line:col errors and 'did you mean' hints
- naming/variables: variable table aligned with MoviePilot names plus ours (cut, airDate,
  issue, slotName, libraryRoot ...); buildNamingVars from parsed release + entity + units
- naming/layout: split by literal '/', segment roles (category/root/season/sub/file),
  value escaping, reserved names, 255-byte segments, validateNamingTemplate
- naming/defaults: MP default movie/tv + our variety template, v1 syntax upgrade,
  entity > root > global override resolution, builtin preview samples
- path/binding: resolveTargetDirectory keeps bound dirs, only unbound segments render;
  renderMediaFileName = last segment of the full template; DEFAULT_TEMPLATES = MP v2
- differential: 34 cases vs MP (21 identical, 13 documented deviations)

Co-Authored-By: Claude Opus 5.5 <[email protected]>

packages/domain/src/naming/index.ts

@@ -0,0 +1,59 @@
+// 命名模板引擎(docs/design/naming-template.md):Jinja 安全子集 + MP 变量 + 段角色/清理 + 覆盖层级
+
+export {
+  LEGACY_NAMING_VERSION,
+  LEGACY_V1_NAMING,
+  LEGACY_V1_TEMPLATES,
+  type LegacyNamingTemplateSet,
+  MP_DEFAULT_NAMING,
+  NAMING_SAMPLES,
+  type NamingOverride,
+  type NamingSample,
+  type NamingSource,
+  type NamingTemplates,
+  namingCanonicalJson,
+  namingKindOf,
+  resolveNamingTemplates,
+  upgradeLegacyTemplate,
+  upgradeLegacyTemplateSet,
+} from "./defaults.ts";
+export {
+  type CompiledNaming,
+  type CompileOptions,
+  compileNaming,
+  endsWithFileExt,
+  NAMING_FILTERS,
+  NAMING_LIMITS,
+  type NamingIssue,
+  NamingTemplateError,
+  type NamingValue,
+  type NamingVars,
+  renderNamingPieces,
+  renderNamingString,
+  tryCompileNaming,
+  unguardedOutputs,
+} from "./engine.ts";
+export {
+  type NamingPathResult,
+  type NamingSegment,
+  type NamingValidation,
+  PATH_MAX_BYTES,
+  type RenderPathOptions,
+  renderNamingPath,
+  SEGMENT_MAX_BYTES,
+  type SegmentRole,
+  validateNamingTemplate,
+} from "./layout.ts";
+export {
+  buildNamingVars,
+  exampleVars,
+  NAMING_VARIABLE_NAMES,
+  NAMING_VARIABLES,
+  type NamingEntityInput,
+  type NamingKind,
+  type NamingVarGroup,
+  type NamingVariableDef,
+  normalizeExt,
+  SEASON_VARS,
+  TITLE_VARS,
+} from "./variables.ts";