IB-WP-0018-T01+T02+T05: routing bridge to llm-connect

T01 — task-type taxonomy. docs/routing-task-types.md names the five
generation stages as the default identity-mapped task types
(summarize-source, extract-entities, extract-relations,
evaluate-entity, synthesize-report) and records the recommended quality
floors per stage. The taxonomy explicitly does not decide which adapter
ships per task type, where the ledger lives, or what a quality score
means — those stay with the caller per the LLM-WP-0004 scope guardrail.

T02 — RoutingAssistedGenerationAdapter bridge in
src/infospace_bench/routing.py. Wraps any llm-connect RoutingPolicy or
AdaptiveRoutingPolicy as an infospace-bench AssistedGenerationAdapter:
maps stage_id -> task_type (overridable), resolves an LLMAdapter,
delegates execute_prompt with a configurable RunConfig, and surfaces
the resolved adapter id, task type, model, usage, and finish_reason
back on AssistedGenerationResult.metadata. Provider tag stays
back-compatible with the strings already used in run records and the
budget rollup (openrouter / claude_code / openai / gemini / mock /
routing).

T05 — eight tests in tests/test_routing_adapter.py cover: static-policy
per-stage resolution, stage_to_task_type overrides, default-mapping
completeness, fall-through for unmapped stage ids, the adaptive path
selecting the cheaper qualifying adapter when a quality_floor is set,
adaptive policy falling back to static when no floor is set, response
metadata round-trip with provider tagging, and estimated_cost_per_1k
pass-through.

Adds llm-connect as a path dependency on pyproject.toml and to the
pytest pythonpath. Static OpenRouter and fixture paths are unchanged;
this commit only adds the option of routing.

139 tests pass, 1 skipped (the OpenRouter live smoke, gated as before).

T03 (shadow-mode integration) and T04 (CLI + per-stage chosen-adapter
in the generation report) follow next.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

pyproject.toml

@@ -7,6 +7,7 @@ dependencies = [
     "PyYAML>=6",
     "markitect-tool @ file:///home/worsch/markitect-tool",
     "artifactstore @ file:///home/worsch/artifact-store",
+    "llm-connect @ file:///home/worsch/llm-connect",
 ]
 
 [project.scripts]
@@ -16,5 +17,5 @@ infospace-bench = "infospace_bench.cli:main"
 infospace_bench = ["profiles/**/*", "model_rates.yaml"]
 
 [tool.pytest.ini_options]
-pythonpath = ["src", "../markitect-tool/src"]
+pythonpath = ["src", "../markitect-tool/src", "../llm-connect"]
 testpaths = ["tests"]