feat(tools): run_code description param + native-parity dispatch logging + web code-mode seam

run_code gains a required bash-style description parameter: presentCall
titles the card with it and moves the program to rawInput, so every
surface gets a readable label. tool/code-dispatch now logs each
sub-call's complete content/isError (the tool/result vocabulary),
replacing the bounded resultSummary and deleting the summarize/cwd
machinery — a UI renders sub-calls through the identical path as native
results. The dsh config tree mounts the worker code runtime and reads
DSH_TOOLS_MODE (temporary seam until per-session mode selection lands).

Session format stays v0 (pre-release churn). Code-mode ACP/TUI fixtures
re-recorded; TUI presenter pin refreshed; catalogs regenerated. Keyless
web smoke pins the code-mode wire contract (tools=[run_code] + SDK
prompt section).

pnpm-lock.yaml

@@ -155,6 +155,9 @@ importers:
       '@deepseek-ai/dsh-client-ui-workspace':
         specifier: workspace:^
         version: link:../../packages/client/ui-workspace
+      '@deepseek-ai/dsh-code-runtime-worker':
+        specifier: workspace:^
+        version: link:../../packages/code-runtime/code-runtime-worker
       '@deepseek-ai/dsh-compact-basic':
         specifier: workspace:^
         version: link:../../packages/compact/compact-basic