fix(ui): show ignored skill line on user command turns

[h30s]

Summary

• Surface ignored: true user text parts (non-synthetic) so slash-command / skill turns show a short line (e.g. “Running skill: …”) instead of an empty user bubble.
• Keep synthetic template text hidden; style the line subtly in the user bubble; include it in session search.

Why

• Users had no feedback when the only visible intent lived on an ignored companion part; the message could disappear entirely once synthetic template parts were hidden.

Issue

• Closes [Feature]: Show skill indicator for command-invoked messages with ignored parts #1213

Scope

• apps/app/src/app/utils/index.ts — isUserSkillIndicatorTextPart, isUserTranscriptTextPart, groupMessageParts(..., isUserMessage) for user-only ignored companion text.
• apps/app/src/app/components/session/message-list.tsx — visibility filter + pass isUser into grouping.
• apps/app/src/app/components/part-view.tsx — muted italic styling for those text parts.
• apps/app/src/app/pages/session.tsx — search indexing for the same text.

Out of scope

• OpenCode emitting the companion part (see [FEATURE] Request: Option to hide/disable full skill content display in conversation anomalyco/opencode#15805); assistant-side ignored parts; changing isUserVisiblePart globally.

Testing

Ran

• pnpm typecheck

Result

• pass/fail: pass (when pretypecheck / UI package build completes; on Windows rerun if tsup exits with a transient crash)
• if fail, exact files/errors: n/a

CI status

• pass: not run here
• code-related failures: n/a
• external/env/auth blockers: n/a

Manual verification

1. Use an OpenCode build that sends a user message with synthetic template + ignored companion text (after upstream supports it).
2. Trigger via slash command / skill; confirm template text does not appear as normal user content.
3. Confirm the short italic-style line appears in the user message area and is findable via in-session search.

Evidence

• N/A (pending real OpenCode payload or local mock)

Risk

• Low: scoped to user messages and ignored + non-synthetic text parts; could show unexpected lines if the server mis-tags user text as ignored.

Rollback

• Revert the commit; restores prior filtering and grouping behavior.

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Project	Deployment	Actions	Updated (UTC)
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The following comment was made by an LLM, it may be inaccurate:

[src-opn]

screenshots plz

[h30s]

I don’t have UI screenshots to attach yet because this path only shows up when OpenCode sends a user message that includes non-synthetic ignored: true text (e.g. the short skill line) alongside the hidden synthetic template. I haven’t been able to reproduce that payload locally with my current OpenCode build, so there’s nothing faithful to screenshot without staging fake data.

Verified so far: pnpm typecheck passes on this branch.

Next step: I’ll add 2–3 screenshots here as soon as I can trigger a real slash-command / skill turn that emits those parts (user bubble with the muted italic line + in-session search hitting that text). If anyone has a known OpenCode version or repro that already produces that shape, I’m happy to match it.