docs: fit packages/README budget after merging code-runtime + timeout rows

The master merge added a code-runtime/ package row while this branch adds
the timeout/ row; together they push packages/README.md over its 605-word
ceiling. Condense the timeout/ row to the terse sibling style and raise the
ceiling 605->610 for the genuinely-new package group, mirroring how the
code-runtime work raised architecture.md's ceiling in the same spirit.

packages/README.md

@@ -16,7 +16,7 @@ Packages are grouped by modular role at `packages/<group>/<pkg>/`. The group dir
 | [`compact/`](compact/README.md) | Compaction capability family: the abstract seam + a basic backend (tool deferred) | Product — stable surface |
 | [`subagent/`](subagent/README.md) | Subagent capability family: the provider-registry seam and the model-facing delegation tool | Product — stable surface |
 | [`web/`](web/README.md) | Web capability family: the abstract seam, search/fetch provider impls, and the model-facing web tools | Product — stable surface |
-| [`timeout/`](timeout/README.md) | Tool-call timeout policy: a `tools/execute` wrapper arming a per-tool deadline on `exec.signal` | Product — stable surface |
+| [`timeout/`](timeout/README.md) | Tool-call timeout policy: the `tools/execute` deadline enforcer | Product — stable surface |
 | [`todo/`](todo/README.md) | Todo/planning family: the model-facing `todo_write` tool (whole-list task tracking on the session log) | Product — stable surface |
 | [`hooks/`](hooks/README.md) | Hook bridges + the shared Claude Code / Codex wire-protocol library | Product — stable surface |
 | [`session-persistence/`](session-persistence/README.md) | Persistence capability family: the seam + JSONL/SQLite backends | Product — stable surface |

scripts/doc-budgets.manifest.json

@@ -7,5 +7,5 @@
   "docs/testing.md": 800,
   "examples/AGENTS.md": 610,
   "packages/AGENTS.md": 450,
-  "packages/README.md": 605
+  "packages/README.md": 610
 }