[Bug] `/context all` no longer lists individual instruction files (regression, 2.1.277)

Bug Description

Through v2.1.273, /context all listed every loaded instruction file (each CLAUDE.md, each .claude/rules/*.md, each @-imported file) as its own row with a token count. On v2.1.277 that section is gone. The output still shows a single summary line ("Memory files: {N} tokens") and still expands the MCP tools, Custom agents and Skills sections, but the per-file instruction breakdown is missing.

The files themselves do load. /memory lists them correctly, and the instructions take effect in the session.

Steps to reproduce

1. Open a project that has a CLAUDE.md, one or more .claude/rules/*.md files, and at least one @ import.
2. Start a session and run /context all.
3. Observe the "Memory files" line shows only a token total. No per-file rows appear in the breakdown.
4. Run /memory and observe the same files are listed as loaded.

Expected

/context all shows the per-file breakdown for instruction files, as it did through v2.1.273 and as it still does for MCP tools, agents and skills.

Actual

Only the summary line appears. The per-file rows are absent in both renderers.

Notes

• Reproduced with both "tui": "fullscreen" and "tui": "default" (switched via /tui default and /tui fullscreen).
• No entry in the CHANGELOG for v2.1.274 through v2.1.277 mentions a change to /context, so this appears to be unannounced.
• #94858 (and earlier #64996) asked for a more compact default /context while keeping /context all as the full listing. What shipped collapses the instruction-file section even under all, which goes further than those requests. This may be a side effect of that compaction work.

Environment Info

• Platform: darwin
• Terminal: ghostty
• Version: 2.1.277
• Feedback ID: 5a894aa7-a662-4999-a2b7-2ce24bec2a1b

Errors

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