Remove emoji usage decision doc - not needed as emoji is already consistent

docs/emoji-usage-decision.md

@@ -1,49 +0,0 @@
-# Emoji Usage Decision for Issue #578
-
-## Summary
-
-Issue #578 raised concern about emoji inconsistency - specifically that PicoClaw uses the lobster emoji (🦞) instead of the crab emoji (🦀).
-
-## Investigation Results
-
-A comprehensive search of the codebase found:
-
-- **Lobster emoji (🦞)**: Used in **4 files** consistently
-- **Crab emoji (🦀)**: **0 instances found**
-
-### Files Using Lobster Emoji (🦞):
-
-1. `pkg/channels/telegram/telegram_commands.go` - Line 59: `"Hello! I am PicoClaw 🦞"`
-2. `pkg/agent/context.go` - Line 72: `fmt.Sprintf("# picoclaw 🦞\n\nYou are picoclaw...")`
-3. `workspace/IDENTITY.md` - Line 4: `PicoClaw 🦞`
-4. `cmd/picoclaw/internal/helpers.go` - Line 12: `const Logo = "🦞"`
-
-## Decision
-
-**Keep the lobster emoji (🦞) and document the decision.**
-
-### Rationale:
-
-1. **Already Consistent**: All 4 usages already use the lobster emoji - there is no inconsistency to fix
-2. **Historical Context**: The lobster emoji has been used since the project inception
-3. **Brand Recognition**: The lobster emoji is now part of PicoClaw's brand identity
-4. **Community Acceptance**: The project has grown significantly with this branding
-5. **Minimal Disruption**: Changing the emoji would require updates across documentation, user-facing messages, and potentially confusion for existing users
-
-## Action Taken
-
-No code changes required. This document serves as:
-- Evidence of the investigation
-- Documentation of the emoji choice
-- Reference for future contributors
-
-## Alternative Considered
-
-We considered switching to crab emoji (🦀) to be more literal to the name, but determined:
-- The cost of change outweighs the benefit
-- "PicoClaw" is a creative name that doesn't need to match a specific crustacean
-- The lobster emoji has character and makes the brand memorable
-
-## Related
-
-- Issue #578: https://github.com/sipeed/picoclaw/issues/578