* chore(ui): replace emoji with Material icons across chat UI
Removes emoji glyphs and swaps them for real Material icons / plain text:
- ToolSchemaRegistry: iconEmoji String -> ImageVector icon for all ~35 tools;
summaryPrefix emoji stripped (terminal keeps '$ '); consumer renders Icon().
- ToolBubble: collapsed summary now shows Icon(config.icon) instead of an emoji
Text prefix; web-search url drops the link emoji; warning badge uses
Icons.Filled.Warning instead of a '⚠' Text glyph.
- ChatBubble SelfImprovementReviewCard: 🛠/🧠 String -> Build/Psychology Icon.
- ChatViewModel / ChatWsEventReducer: drop ⚠️/✅ prefixes from user-facing
status/error messages (severity already conveyed by color/styling).
- SubagentInspectionSheet: ✅/🔄/❌/⭕ status markers -> CheckCircle/Autorenew/
Cancel/RadioButtonUnchecked (tinted); ElectricBolt section headers ->
FormatListBulleted + Groups.
- strings.xml (en/zh/ko): drop '✓' from the Copied label.
ktlint clean; compileDebugKotlin SUCCESSFUL. Remaining chat files
(ToolViewBuilder, ChatComposer, MessageCards, ChatReactions, ComposerToolbar,
FullBleedAgentMessage) tracked in follow-up commits on this branch.
* test: align unit tests with emoji-free summary + status messages
composeToolSummaryLines dropped the emoji parameter and no longer prepends
an emoji glyph to the collapsed summary line, so update ToolSummaryLinesTest
call sites + expected strings accordingly.
SlashCommandDispatchRpcTest asserted the old '⚠️ /cmd: ...' error messages;
those prefixes were removed in the UI cleanup, so drop them from the
expected strings.
ChatWsEventReducerTest emoji usages are model-output fixtures, not assertions
on changed code paths — left untouched.
M57
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