Fix tea CLI syntax for viewing issues

The tea CLI doesn't have a `view` subcommand - use `tea issues <number>`
directly instead of `tea issues view <number>`.

- Fix example in ARCHITECTURE.md
- Add clarifying tip in gitea skill to prevent this common mistake

Closes #2

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

ARCHITECTURE.md

@@ -55,7 +55,7 @@ argument-hint: <issue-number>
 
 # Work on Issue #$1
 
-1. **View the issue**: `tea issue view $1`
+1. **View the issue**: `tea issues $1`
 2. **Create a branch**: `git checkout -b issue-$1-<title>`
 ...
 ```