Revert "chore(deps-dev): update python-dotenv requirement from <1.0.0,>=0.19.0 to >=0.19.0,<2.0.0"

[Anket11]

Reverts #433

[github-actions]

Complexity Analysis

Average: C — Moderate (14.678571428571429)

Hotspots tracked below. These are functional, well-exercised components — listed for visibility as the codebase scales.

Grade	Name	Type	Score
F	FAISSIndexManager.initialize_index	Method	51
E	SkillExtractionService.extract_and_align_core	Method	36
E	FAISSIndexManager.search_similar_skills	Method	32
D	ResponseParser._parse_skills_from_response	Method	24
D	FAISSIndexManager	Class	22
C	ResponseParser.parse_knowledge_task_response	Method	20
C	_BaseTaxonomyFAISSIndexManager.search_similar	Method	18
C	ResponseParser	Class	17
C	ResponseParser.parse_ksa_extraction_response	Method	16
C	ResponseParser.parse_skill_extraction_response	Method	15
C	openai_generate	Function	14
C	LLMRouter._initialize_components	Method	14
C	parse_output_vllm	Function	13
C	AlignmentService.align	Method	11
B	SkillExtractionService._deduplicate	Method	10
B	load_model_from_vllm	Function	10
B	_BaseTaxonomyFAISSIndexManager.initialize_index	Method	9
B	anthropic_generate	Function	9
B	ResponseParser.parse_ksa_details_response	Method	8
B	SkillExtractionService	Class	8
B	_BaseTaxonomyFAISSIndexManager	Class	8
B	GeminiAPI.generate_with_config	Method	8
B	SkillExtractorRefactored._expand_allowed_sources	Method	7
B	get_completion_vllm	Function	7
B	AlignmentService	Class	6
B	SkillExtractionService._normalize_mixed_concept_rows	Method	6
B	fetch_model_output	Function	6
B	LlamaCppBackend.__init__	Method	6

[github-actions]

Code Hygiene

The following items are defined but not yet in active use. Routine cleanup — no impact on functionality.

• laiser/llm_methods.py:87 — unused variable 'args' (100% confidence)
• laiser/llm_models/llama_cpp_handler.py:31 — unused variable 'chat_format' (100% confidence)
• laiser/llm_models/llama_cpp_handler.py:72 — unused variable 'exc' (100% confidence)
• laiser/llm_models/llama_cpp_handler.py:72 — unused variable 'exc_type' (100% confidence)
• laiser/llm_models/llama_cpp_handler.py:72 — unused variable 'tb' (100% confidence)
• laiser/llm_models/llm_router.py:70 — unused variable 'args' (100% confidence)
• laiser/llm_models/llm_router.py:85 — unused variable 'args' (100% confidence)
• laiser/services.py:130 — unused variable 'raw_description' (100% confidence)

[github-actions]

📦 Preview package published!

Install and test this PR:

pip install --index-url https://test.pypi.org/simple/ laiser-preview==0.5.dev20260825041015