Add settings page for tag-to-company mappings and auto-create Paperclip projects

When a case is created, a Paperclip project is now automatically created in
the correct company based on the appeal_subtype tag. Tag-to-company mappings
are managed via a new Settings page that pulls companies from Paperclip DB.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

mcp-server/src/legal_mcp/services/db.py

@@ -376,6 +376,16 @@ CREATE TABLE IF NOT EXISTS chair_feedback (
     created_at TIMESTAMPTZ DEFAULT now()
 );
 
+CREATE TABLE IF NOT EXISTS tag_company_mappings (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    tag TEXT NOT NULL,                            -- appeal_subtype value (e.g. building_permit)
+    tag_label TEXT NOT NULL DEFAULT '',            -- Hebrew display label
+    company_id TEXT NOT NULL,                     -- Paperclip company UUID
+    company_name TEXT NOT NULL DEFAULT '',         -- cached company name for display
+    created_at TIMESTAMPTZ DEFAULT now(),
+    UNIQUE(tag, company_id)
+);
+
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