refactor(evidence): migrate runtime consumption (#29)

harness/tht/cli/search_cmd.py

@@ -54,18 +54,16 @@ def search_cmd(
     from rich.table import Table
 
     from tht.cli.vector_cmd import make_embedder, open_searcher, require_vector_cfg
+    from tht.evidence import active_searcher, validate_corpus_workspace
     from tht.lshindex import LshIndexError, load_index, query_index
     from tht.search import combined_search
 
     cfg = _load_config_or_exit(config)
-    from tht.search.evidence import validate_corpus_workspace
 
     workspace_id = workspace_id_for_config(cfg, config)
     validate_corpus_workspace(cfg, workspace_id)
     dwh_snapshot = _leased_dwh_snapshot(cfg, ctx)
     require_vector_cfg(cfg)
-    from tht.search.evidence import active_searcher
-
     runtime_searcher = active_searcher(
         cfg, open_searcher(cfg),
         workspace_id=workspace_id,
@@ -255,13 +253,17 @@ def pack_cmd(
     from sqlalchemy.exc import OperationalError
 
     from tht.cli.vector_cmd import make_embedder, open_searcher, require_vector_cfg
+    from tht.evidence import (
+        active_searcher,
+        build_retrieval_entries,
+        validate_corpus_workspace,
+    )
     from tht.ports.vector import VectorReadUnavailable, VectorStoreError
     from tht.search import combined_search, schema_tables
     from tht.memory import SOLVED_KIND
     from tht.vectorstore.embeddings import EmbeddingsError
 
     cfg = _load_config_or_exit(config)
-    from tht.search.evidence import validate_corpus_workspace
 
     workspace_id = workspace_id_for_config(cfg, config)
     validate_corpus_workspace(cfg, workspace_id)
@@ -277,8 +279,6 @@ def pack_cmd(
     vec = None
     searcher = embedder = None
     try:
-        from tht.search.evidence import active_searcher
-
         searcher = active_searcher(
             cfg, open_searcher(cfg),
             workspace_id=workspace_id,
@@ -314,11 +314,7 @@ def pack_cmd(
                 top=PACK_EVIDENCE_TOP, rrf_k=cfg.search.rrf_k,
                 kinds=KIND_MAP["evidence"], query_vec=vec,
             )
-            evidence = [
-                {"title": r.label, "status": r.status,
-                 "excerpt": r.content[:PACK_EXCERPT_CHARS]}
-                for r in ev
-            ]
+            evidence = build_retrieval_entries(ev, excerpt_chars=PACK_EXCERPT_CHARS)
         except degrade as e:
             warnings.append(f"ricerca evidence fallita ({e})")
         try:

harness/tht/cli/session_cmd.py

@@ -518,7 +518,7 @@ def finalize_cmd(session_id: str = typer.Argument(...), config: Path = CONFIG_OP
     from tht.execute import ExecutionError
     from tht.execute.warnings import plan_warnings, runtime_warnings, static_warnings
     from tht.report import extract_reviewer_notes, render_validation_report
-    from tht.session.artifacts import build_evidence_entries
+    from tht.evidence import project_session
     from tht.phase import cte_plan as effective_cte_plan
     from tht.phase import effective_decisions
     from tht.session.models import SchemaLinking
@@ -614,7 +614,7 @@ def finalize_cmd(session_id: str = typer.Argument(...), config: Path = CONFIG_OP
     linking = SchemaLinking.model_validate(
         json.loads(snapshot.artifacts["schema_linking"])
     )
-    entries = build_evidence_entries(decisions, linking, cfg.paths.artifacts / "evidence")
+    entries = project_session(decisions, linking, cfg.paths.artifacts / "evidence")
     evidence = json.dumps(entries, ensure_ascii=False, indent=2)
 
     # --- manifest + riepilogo ---