Vim modal editing mode, Vim-aware submission, print-mode slash-command enhancements, and various CLI and…

Vim modal editing mode with Normal, Insert, Visual, and Visual Line modes, Vim-aware prompt submission, Vim editing in comment/diff views, print-mode slash-command and non-interactive enhancements, plugin configuration improvements, and fixes for command auto-approval, MCP servers, and autocomplete history.

• Added a Vim editing mode, off by default and switched on from /settings under Editor Mode, bringing modal editing to the prompt with Normal, Insert, Visual and Visual Line modes, a mode badge in the status line and a Vim tab in /help, and covering the h/j/k/l, w/b/e and W/B/E motions, the 0/^/$/gg/G boundaries, the f/F/t/T character searches with their ; and , repeats, the i/a/I/A insert entries, the d/c/y operators alongside x, D and C filling the unnamed register for p, and the iw/aw/iW/aW/ip/ap text objects.
• Added Vim-aware submission so a prompt can be sent without leaving modal editing, through an Editor Mode > Insert First toggle that opens the prompt in Insert mode where a bare Enter submits and a modified key such as shift+enter or ctrl+j inserts a newline, ctrl+s and ctrl+enter keys that submit from Normal mode, an Enter binding available as vim.insert.submit, and the full set of vim.* scopes in keybindings.json for remapping any of it.
• Added Vim editing to the comment editors in the diff and artifact-detail views, whose footer hints follow the active mode rather than showing one fixed set of bindings, and made a collapsed block behave as a single unit under Vim motions.
• Added non-interactive answers for the read-only slash commands in print mode, so -p "/usage", /quota, /credits, /model, /effort and /skills emit one tab-separated record per line — or a structured payload under --output-format json and stream-json — without starting an agent turn, spending quota, or leaving a conversation behind.
• Added an explicit refusal for the remaining interactive-only slash commands in print mode, which previously fell through as literal prompt text and let the model answer as though the command had run, so -p "/clear" reported the context cleared while nothing was cleared; each now fails with the flag or subcommand that replaces it.
• Improved plugin enable and disable so config.json is the only place enablement lives, seeded once from each plugin's manifest, which stops a plugin that later ships "disabled": true from switching itself off under someone who was already running it and stops a shipped-default change from moving every user on the next release.
• Improved the artifact detail view by wrapping long lines in code files instead of clipping them at the right edge.
• Improved model retries by honoring the server-supplied retry delay instead of the client's own backoff, so a retry after a rate limit or an overload waits exactly as long as the server asks.
• Improved model-loading errors so a permission failure such as a missing license or a missing IAM role is shown as itself, with a troubleshooting link, instead of a generic failure during the run.
• Fixed an allowlist entry that tokenizes to zero command words — command(time), a comment-only entry, or an empty compound such as () — matching every command and silently auto-approving anything the agent ran; such an entry now matches nothing.
• Fixed commands being auto-approved while the session was in request-review or strict permission mode.
• Fixed admin controls being skipped for MCP servers at startup, where a fetch made before authentication cached "admin controls not applicable" and allowed every server for the next five minutes, and fixed the built-in Chrome DevTools MCP server being blocked outright by admin controls.
• Fixed MCP progress callbacks being dropped and the task log file not being initialized, so long-running MCP tool calls report progress again.
• Fixed a slash command receiving the collapsed [Pasted text #N] placeholder instead of the pasted content when its argument was pasted into the prompt.
• Fixed the prompt saving the typed prefix rather than the completed command name to history when an autocompleted slash command was submitted, so up-arrow recall replays what actually ran, and made an alias require an exact match before auto-executing so a partial alias fills the prompt instead of running a command you did not finish typing.
• Fixed an asynchronous settings refresh re-enabling the feedback survey partway through a print-mode run that had switched it off.
• Fixed spurious "Out of credits" errors, where an empty credits response was read as a balance of zero.
• Fixed the "Use AI Credits" setting being offered to accounts signed in through a Google Cloud project or application default credentials, where it does not apply.