phase2-ATS + heuristic careers finding

.env.example

@@ -1,6 +1,8 @@
 # == Job source / ingestion ==
-JOB_SOURCE=jobspy                   # jobspy (default, free) | apify
-SEARCH_TERMS=["software engineer"]  # JSON list; CLI --search overrides
+# jobspy (default, free) | apify
+JOB_SOURCE=jobspy
+# JSON list; CLI --search overrides
+SEARCH_TERMS=["software engineer"]
 LOCATION=United States
 HOURS_OLD=72
 BATCH_SIZE=20
@@ -19,9 +21,11 @@ SEARCH_API_KEY=
 # Pydantic AI is model-agnostic — you may also set the provider's native key var:
 #   Anthropic: ANTHROPIC_API_KEY=...
 #   OpenAI:    OPENAI_API_KEY=...
-LLM_API_KEY=
-CLASSIFIER_MODEL=           # cheap model for link classification
-AGENT_MODEL=                # stronger model for the browser agent
+LLM_API_KEY=PLACEHOLDER_LLM_API_KEY
+# cheap model for link classification
+CLASSIFIER_MODEL=PLACEHOLDER_CLASSIFIER_MODEL
+# stronger model for the browser agent
+AGENT_MODEL=PLACEHOLDER_AGENT_MODEL
 
 # == HTTP client ==
 HTTP_TIMEOUT=20