v0.79.1

New Features

• Claude Fable 5 - Claude Fable 5 is now available on the Anthropic and Amazon Bedrock providers, with adaptive thinking and xhigh effort support.
• Prompt template defaults - Prompt templates can use default positional arguments such as ${1:-7} for optional values. See Prompt Template Arguments.
• Configurable project trust defaults - defaultProjectTrust lets users choose whether unresolved project trust asks, always trusts, or never trusts by default, and extensions can inspect effective trust decisions. See Project Trust and ctx.isProjectTrusted().
• Natural extension autocomplete triggers - Extension autocomplete providers can declare trigger characters such as # or $ so suggestions open without slash-command prefixes. See Autocomplete Providers.

Added

• Added default-value expansion for prompt template positional arguments, e.g. ${1:-7} (#5553 by @dannote).
• Added areExperimentalFeaturesEnabled feature guard to allow users to opt in to early features (#5547 by @vegarsti).
• Added ctx.isProjectTrusted() for extensions to observe the effective project trust decision, including temporary trust decisions (#5523).
• Added a global defaultProjectTrust setting to choose whether unresolved project trust asks, always trusts, or never trusts by default.
• Added extension autocomplete trigger character support for ctx.ui.addAutocompleteProvider() wrappers (#4703).
• Added Claude Fable 5 model support inherited from @earendil-works/pi-ai for the Anthropic and Amazon Bedrock providers, with adaptive thinking and xhigh effort support.

Fixed

• Fixed inherited Amazon Bedrock inference profile ARN region resolution to prefer the ARN's embedded region over AWS_REGION (#5527 by @AJM10565).
• Fixed inherited IME hardware cursor positioning while slash-command autocomplete is visible (#5283 by @smoosex).
• Fixed inherited z.ai thinking-off requests to send the provider's thinking: { type: "disabled" } compatibility parameter (#5330).
• Fixed inherited OpenCode completions model metadata to send explicit maxTokens as max_tokens (#5331).
• Fixed inherited Moonshot Kimi thinking-off requests to send the provider's thinking: { type: "disabled" } compatibility parameter (#5531).
• Fixed inherited Azure OpenAI Responses requests to disable server-side response storage (#5530).
• Fixed inherited Azure GPT-5.4 and GPT-5.5 context window metadata to 1,050,000 tokens, matching Azure Foundry deployments instead of OpenAI's 272k limit (#5559).
• Fixed inherited OpenAI and Azure GPT-5 Pro maxTokens metadata to 128,000, correcting an upstream value that duplicated the input sub-limit as the output limit (#5559).
• Fixed inherited prompt history navigation to restore the current draft when returning from history browsing (#5494).
• Fixed inherited wrapping for mixed Latin and CJK text so unspaced CJK runs can break at grapheme boundaries without leaving large trailing gaps (#5495).
• Fixed extension OAuth login prompts to keep previous submitted prompt rows stable instead of mirroring the active input value (#5433).
• Fixed /reload to apply updated steeringMode and followUpMode settings to the current session (#5377).
• Fixed invalid models.json syntax to skip startup config migrations and report the normal file-path-aware models error instead of a raw JSON parse stack trace (#5418).
• Fixed GitHub release notes and interactive changelog links to resolve package-relative documentation URLs correctly (#5516).
• Fixed CLI help and version output, including plain redirected --help/--version output and simplified list/config help text.
• Fixed /new from ephemeral sessions to keep the new session ephemeral instead of persisting it by default (#5045).
• Clarified custom model docs that name and modelOverrides.name do not replace model IDs in the footer or primary model lists (#4841).