v0.preview.87

v0.preview.87 - 2026-08-23

Added

• GLM 5.3 on Z.ai and OpenRouter, with graded low/high/max reasoning effort (Antix keeps GLM 5.2 until its catalog exposes 5.3)
• /models <model_id> selects a model directly on the current provider, including IDs not in the catalog listing
• Denying a tool call can carry a feedback message: the reason reaches the model as the failed tool result and is shown in the transcript under the decision line
• /term opens a native split inside Ghostty 1.3+

Changed

• Successful file reads render as a compact one-liner (Read (path) ·110 lines) and failed calls carry a red Failed suffix with the error as a dim child row; grouped runs list reads and failures per call instead of folding them into the neutral counts summary
• The default status line renders model(effort) and cwd(⑂ branch) as compound items, with the same independent /statusline toggles
• Markdown blockquotes use the muted theme foreground instead of bright green, so quoted lines read as asides
• The chat input, diff approval, credential entry, and model settings share an in-house grapheme-aware text buffer; combining marks, skin tones, ZWJ emoji, and wide glyphs now wrap and move the cursor correctly (removes the tui-input, ratatui-macros, and critical-section dependencies)

Fixed

• A mid-turn compaction (context-overflow retry) no longer ends the turn by printing the summary as the answer — the summary is re-entered as a user-role continuation so the model resumes the task
• Launching the TUI with a redirected stdout fails fast with an actionable message instead of hanging two seconds and dying with a cursor-position error
• A persistently empty provider response fails the turn after three retries instead of resubmitting the same prompt up to the step limit, and tool calls whose stream never delivered a name are failed back to the model instead of being silently dropped
• Queued keystrokes can no longer approve a tool approval prompt that was just swapped in
• The public repository's adapter tests are kept in sync with the source of record, which previously failed deterministically in the published checkout