test: add intent extraction test suite with 39 scenarios

Add comprehensive test suite for LLM intent extraction covering all 9
use cases, GPU/model extraction, priority enforcement, user counts,
conversation history, and UI button strings. Tests require Ollama and
are run explicitly via `make test-intent`. Two smoke tests run as part
of `make test-integration`.

Assisted-by: Claude <noreply@anthropic.com>
Signed-off-by: Andre Fredette <afredette@redhat.com>

Author: anfredette

Makefile

@@ -530,7 +530,7 @@ test: test-unit test-db test-integration ## Run all tests (requires DB and Ollam
 
 test-unit: ## Run unit tests (no DB or Ollama required)
 	@printf "$(BLUE)Running unit tests...$(NC)\n"
-	cd $(SRC_DIR) && uv run pytest ../tests/ -v -m "not database and not integration"
+	cd $(SRC_DIR) && uv run pytest ../tests/ -v -m "not database and not integration and not intent_extraction"
 
 test-db: ## Run database tests (requires PostgreSQL with benchmark data)
 	@printf "$(BLUE)Running database tests...$(NC)\n"
@@ -540,6 +540,10 @@ test-integration: setup-ollama ## Run integration tests (requires Ollama and DB)
 	@printf "$(BLUE)Running integration tests...$(NC)\n"
 	cd $(SRC_DIR) && uv run pytest ../tests/ -v -m integration
 
+test-intent: setup-ollama ## Run intent extraction tests (requires Ollama)
+	@printf "$(BLUE)Running intent extraction tests...$(NC)\n"
+	cd $(SRC_DIR) && uv run pytest ../tests/ -v -m intent_extraction
+
 ##@ Code Quality
 
 lint: ## Run linters

pyproject.toml

@@ -143,6 +143,7 @@ asyncio_default_fixture_loop_scope = "session"
 markers = [
     "database: marks tests that require a running PostgreSQL database with benchmark data",
     "integration: marks tests as integration tests (requires Ollama and database)",
+    "intent_extraction: marks tests that validate LLM intent extraction (requires Ollama, run with make test-intent)",
     "unit: marks tests as unit tests (no external dependencies)",
 ]