fix(skill): name sendmark's workers by class, not a partial mode list

sendmark's comment and verbs.md 5.5 listed six external modes by name,
and test/agent-skill-mode-lists.test.ts refuses any partial list of them
(the one a ninth CLI would silently miss). Both now say what the class
is: a hook-less claude, a worker on the local model, and every external
agent mode but deepseek.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

plugins/codeman/skills/codeman/SKILL.md

@@ -557,8 +557,8 @@ sendwait() {
   printf '%s\n' "$r"
 }
 # sendmark <sid> <prompt> [timeoutSec] -> one JSON line, for an AGENT worker with no
-# end-of-turn signal: a `local` worker whose agent is not claude, and opencode, gemini, pi,
-# grok, omp, copilot or a hook-less claude (a shell worker takes §5.5's echo form instead):
+# end-of-turn signal: a `local` worker whose agent is not claude, a hook-less claude, and
+# every external agent mode but deepseek (a shell worker takes §5.5's echo form instead):
 #   {"token":…,"delivered":true,"matched":true,"answerFile":"<path>","answer":"<text>",…}
 # rc 0: the marker printed and the answer file was read. 2: no marker within the timeout
 # (default 600 s; the worker may still be working, so nothing is deleted). 3: the worker's

plugins/codeman/skills/codeman/preamble.sh

@@ -419,8 +419,8 @@ sendwait() {
   printf '%s\n' "$r"
 }
 # sendmark <sid> <prompt> [timeoutSec] -> one JSON line, for an AGENT worker with no
-# end-of-turn signal: a `local` worker whose agent is not claude, and opencode, gemini, pi,
-# grok, omp, copilot or a hook-less claude (a shell worker takes §5.5's echo form instead):
+# end-of-turn signal: a `local` worker whose agent is not claude, a hook-less claude, and
+# every external agent mode but deepseek (a shell worker takes §5.5's echo form instead):
 #   {"token":…,"delivered":true,"matched":true,"answerFile":"<path>","answer":"<text>",…}
 # rc 0: the marker printed and the answer file was read. 2: no marker within the timeout
 # (default 600 s; the worker may still be working, so nothing is deleted). 3: the worker's

plugins/codeman/skills/codeman/reference/verbs.md

@@ -485,7 +485,7 @@ snippet carries the exit code back to you.
 For a **claude** worker with no hooks, ask for the marker in halves in the prompt
 itself ("print the word WORKDONE immediately followed by `_<token>`") for the same
 reason, and match the joined token. For any **agent** worker without `stop` (a hook-less
-claude, opencode, gemini, pi, grok, omp, copilot, a worker on the local model), the
+claude, a worker on the local model, every external agent mode but deepseek), the
 preamble's `sendmark <sid> "<prompt>"` is exactly that in one call, and also asks for the
 answer in a file it reads back: [§5.16](#516-a-worker-on-the-local-model). ⚠️ Against a TUI, match a single space-free token:
 a full-screen TUI positions text with cursor movements rather than literal spaces, so