fix(wiki): guide shortcut source recovery

[ViperCai]

Summary

• diagnose wiki +node-create failures only when a shortcut create returns API code 131002
• confirm the supplied source is another Wiki shortcut, then return a terminal recovery hint with the real origin_node_token and obj_type
• preserve the original typed API error and never rewrite or replay the create request
• document the shortcut-to-shortcut recovery workflow

Root cause

Wiki does not support creating a shortcut whose source is another shortcut. The upstream API reports the generic invalid-parameter code 131002, so agents could retry the same deterministic failure without knowing how to resolve the underlying origin node.

Behavior

The extra get_node diagnostic runs only after a shortcut create fails with 131002. If the source cannot be inspected or is not another shortcut, the CLI returns the original error unchanged.

Validation

• go test ./shortcuts/wiki -run 'TestRunWikiNodeCreate' -count=1
• make fmt-check
• real bot and user requests were exercised manually: shortcut-to-shortcut returned 131002, stopped retrying, and returned the real origin token/type
• temporary validation resources were cleaned up

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[codecov]

Codecov Report

❌ Patch coverage is 89.28571% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.36%. Comparing base (0a20372) to head (ba67ab3).

Files with missing lines	Patch %	Lines
shortcuts/wiki/wiki_node_create.go	89.28%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2350   +/-   ##
=======================================
  Coverage   76.35%   76.36%           
=======================================
  Files        1043     1043           
  Lines      114771   114791   +20     
=======================================
+ Hits        87638    87656   +18     
- Misses      20385    20387    +2     
  Partials     6748     6748           

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