#23171: docs: fix typo 'assistent' → 'assistant' in antipatterns.md

## Summary - **Problem:** Typo in documentation: \"assistent\" instead of \"assistant\" in \`antipatterns.md\`. - **Why it matters:** Documentation accuracy reflects project quality. - **What changed:** Fixed the spelling: \`assistent\` → \`assistant\`. - **What did NOT change:** No logic or behavior changes. ## Change Type (select all) - [ ] Bug fix - [ ] Feature - [ ] Refactor - [x] Docs - [ ] Security hardening - [ ] Chore/infra ## Scope (select all touched areas) - [ ] Gateway / orchestration - [ ] Skills / tool execution - [ ] Auth / tokens - [ ] Memory / storage - [ ] Integrations - [ ] API / contracts - [ ] UI / DX - [ ] CI/CD / infra ## Linked Issue/PR - N/A ## User-visible / Behavior Changes None — documentation fix only. ## Security Impact (required) - New permissions/capabilities? \`No\` - Secrets/tokens handling changed? \`No\` - New/changed network calls? \`No\` - Command/tool execution surface changed? \`No\` - Data access scope changed? \`No\` ## Repro + Verification ### Steps 1. Open \`antipatterns.md\` 2. Search for \"assistent\" 3. Confirm it now reads \"assistant\" ### Expected - Correct spelling ### Actual - Fixed ## Evidence Single-word typo fix, self-evident. ## Human Verification (required) - Verified scenarios: Confirmed correct spelling - Edge cases checked: N/A - What I did **not** verify: N/A ## Compatibility / Migration - Backward compatible? \`Yes\` - Config/env changes? \`No\` - Migration needed? \`No\` ## Failure Recovery (if this breaks) N/A — documentation change only. ## Risks and Mitigations None.