feat: add unified code quality dashboard with multiple validators

- Add validator_type field to scans and violations (architecture,
  security, performance)
- Create security validator with SEC-xxx rules
- Create performance validator with PERF-xxx rules
- Add base validator class for shared functionality
- Add validate_all.py script to run all validators
- Update code quality service with validator type filtering
- Add validator type tabs to dashboard UI
- Add validator type filter to violations list
- Update stats response with per-validator breakdown
- Add security and performance rules documentation
- Add chat-bubble icons to icon library

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

alembic/versions/f4a5b6c7d8e9_add_validator_type_to_code_quality.py

@@ -0,0 +1,95 @@
+"""add_validator_type_to_code_quality
+
+Revision ID: f4a5b6c7d8e9
+Revises: e3f4a5b6c7d8
+Create Date: 2025-12-21
+
+This migration adds validator_type column to architecture scans and violations
+to support multiple validator types (architecture, security, performance).
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = "f4a5b6c7d8e9"
+down_revision: Union[str, None] = "e3f4a5b6c7d8"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # Add validator_type to architecture_scans table
+    op.add_column(
+        "architecture_scans",
+        sa.Column(
+            "validator_type",
+            sa.String(length=20),
+            nullable=False,
+            server_default="architecture",
+        ),
+    )
+    op.create_index(
+        op.f("ix_architecture_scans_validator_type"),
+        "architecture_scans",
+        ["validator_type"],
+        unique=False,
+    )
+
+    # Add validator_type to architecture_violations table
+    op.add_column(
+        "architecture_violations",
+        sa.Column(
+            "validator_type",
+            sa.String(length=20),
+            nullable=False,
+            server_default="architecture",
+        ),
+    )
+    op.create_index(
+        op.f("ix_architecture_violations_validator_type"),
+        "architecture_violations",
+        ["validator_type"],
+        unique=False,
+    )
+
+    # Add validator_type to architecture_rules table
+    op.add_column(
+        "architecture_rules",
+        sa.Column(
+            "validator_type",
+            sa.String(length=20),
+            nullable=False,
+            server_default="architecture",
+        ),
+    )
+    op.create_index(
+        op.f("ix_architecture_rules_validator_type"),
+        "architecture_rules",
+        ["validator_type"],
+        unique=False,
+    )
+
+
+def downgrade() -> None:
+    # Drop indexes first
+    op.drop_index(
+        op.f("ix_architecture_rules_validator_type"),
+        table_name="architecture_rules",
+    )
+    op.drop_index(
+        op.f("ix_architecture_violations_validator_type"),
+        table_name="architecture_violations",
+    )
+    op.drop_index(
+        op.f("ix_architecture_scans_validator_type"),
+        table_name="architecture_scans",
+    )
+
+    # Drop columns
+    op.drop_column("architecture_rules", "validator_type")
+    op.drop_column("architecture_violations", "validator_type")
+    op.drop_column("architecture_scans", "validator_type")