test(runner): retire unqualified DeepSeek plan cell

tests/runner-e2e/README.md

@@ -82,9 +82,12 @@ workflows: 42 cells. Its cases are:
 
 `openrouter-model-breadth` (**OpenRouter Model Breadth**) is four qualified
 models from the tracked weekly tool-capable ranking snapshot × native OpenCode
-× local × three workflows: 12 cells. Xiaomi MiMo V2.5 remains recorded in the
-immutable ranking snapshot but is excluded from paid qualification because its
-latency repeatedly exhausts the cell deadline. Its cases are:
+× local, with 11 supported model/workflow cells. Xiaomi MiMo V2.5 remains
+recorded in the immutable ranking snapshot but is excluded from paid
+qualification because its latency repeatedly exhausts the cell deadline.
+DeepSeek V4 Flash remains qualified for hello and question/resume, but its Plan
+cell is excluded after three successful semantic completions consistently
+ignored the required exact final response. Its cases are:
 
 - `hello-complete`: a basic nonce response and explicit Done transition;
 - `question-resume-complete`: one structured question, browser selection of
@@ -100,7 +103,7 @@ duplicating the final response. The second workflow restarts the isolated
 Paperclip server while the interaction is waiting, reloads that state, and
 then resumes it. The suite has no Daytona cells.
 
-The complete catalog is 68 cells and 118 expected paid agent turns. Follow-up
+The complete catalog is 67 cells and 116 expected paid agent turns. Follow-up
 steps remain ordered within their cell; all other cells are independent.
 Narrow selectors are strongly recommended while developing fixtures.
 
@@ -292,7 +295,7 @@ Set `RUNNER_E2E_AWS_ENABLED=true` to route paid cells to the repository-scoped
 ephemeral AWS RunsOn fleet selected by
 `runs-on/fleet=paperclip-public-pr-x64/env=public-ci`. Any other value uses the
 proven GitHub-hosted `ubuntu-latest` target. Set `RUNNER_E2E_MAX_PARALLEL` to an
-integer from 1–100 on AWS (default 100); use at least 68 to run the current
+integer from 1–100 on AWS (default 100); use at least 67 to run the current
 complete catalog in one wave. The fallback runner retains its 1–57 limit and
 default of 32. Multi-turn steps are sequential inside their cell while
 independent cells overlap. Artifacts and merged HTML/JUnit/normalized reports