refactor(semantics): migrate legacy @TIER to @COMPLEXITY annotations

- Replaced @TIER: TRIVIAL with @COMPLEXITY: 1
- Replaced @TIER: STANDARD with @COMPLEXITY: 3
- Replaced @TIER: CRITICAL with @COMPLEXITY: 5
- Manually elevated specific critical/complex components to levels 2 and 4
- Ignored legacy, specs, and node_modules directories
- Updated generated semantic map

backend/src/models/git.py

@@ -1,5 +1,5 @@
 # [DEF:GitModels:Module]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @SEMANTICS: git, models, sqlalchemy, database, schema
 # @PURPOSE: Git-specific SQLAlchemy models for configuration and repository tracking.
 # @LAYER: Model
@@ -27,7 +27,7 @@ class SyncStatus(str, enum.Enum):
     CONFLICT = "CONFLICT"
 
 # [DEF:GitServerConfig:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Configuration for a Git server connection.
 class GitServerConfig(Base):
     __tablename__ = "git_server_configs"
@@ -44,7 +44,7 @@ class GitServerConfig(Base):
 # [/DEF:GitServerConfig:Class]
 
 # [DEF:GitRepository:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Tracking for a local Git repository linked to a dashboard.
 class GitRepository(Base):
     __tablename__ = "git_repositories"
@@ -59,7 +59,7 @@ class GitRepository(Base):
 # [/DEF:GitRepository:Class]
 
 # [DEF:DeploymentEnvironment:Class]
-# @TIER: TRIVIAL
+# @COMPLEXITY: 1
 # @PURPOSE: Target Superset environments for dashboard deployment.
 class DeploymentEnvironment(Base):
     __tablename__ = "deployment_environments"