[Sync] opencode 2.x
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Coja
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# opencode config
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Config tree for [opencode](https://opencode.ai) (2.x), tuned for **small local models** behind a
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llama.cpp router. Stowed into `~/.config/opencode/` as per-file symlinks; editing here edits the live
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config (restart opencode, or `opencode service restart`, to pick changes up — the 2.x background
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service caches config).
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## Layout
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| Path | What |
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|---|---|
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| `opencode.json` | Providers, permissions, primary agents, defaults. Written in the v1 schema, which 2.x still accepts. |
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| `openai-gpt.jsonc` | Optional GPT/Codex OAuth overlay (OpenAI provider + `opencode-openai-codex-auth` plugin). Not loaded by itself — see *GPT overlay*. |
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| `AGENTS.md` | Global rules prepended to every session. Same text as the pi config's `AGENTS.md`: terse, verify-before-asserting, small-model friendly. |
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| `agents/*.md` | Four subagents with real prompts and scoped permissions: `code-reviewer`, `test-runner` (hidden), `doc-writer` (edits docs only), `security-auditor` (hidden). |
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| `commands/*.md` | `/commit` (Conventional Commits message, never commits) and `/review` (read-only diff review), both on the `plan` agent. |
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| `plugins/verbose/` | 2.x TUI plugin: `<leader>v`, `/verbose`, or the palette entry toggles the *verbose view* — thinking blocks expanded and tool calls ungrouped — reading the live state from the built-in toggles so a mixed state converges. `server.ts` is a no-op half required by the loader. |
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| `themes/catppuccin-mocha.json` | Catppuccin Mocha (dark) / Latte (light) theme following the pi theme's semantic mapping. Built-in `catppuccin` exists too; this one matches pi. |
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| `tui.json` | TUI settings in the v1 schema (2.x compat): theme, leader timeout, stacked diffs, block cursor, attention notifications, a few extra keybinds. |
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The sandbox wrapper lives in `../fish/functions/opencodes.fish`: `opencodes` runs opencode under
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bwrap with the stowed config dirs, `~/.cache/opencode`, state and data bound, and only the needed
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environment passed through. Extra arguments go to opencode.
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## Providers and models
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Two OpenAI-compatible providers point at the same llama.cpp router: `llama.cpp` on the LAN and
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`duskadiy` through the public hostname (`apiKey` from `$DUSKADIY_API_KEY`). Model ids are the preset
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section names in `fl/.config/llamacpp/config.ini`; keep the lists in sync with it and with the pi and
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aichat configs. Both providers use a one-hour request timeout — the default five minutes cut off
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long local replies.
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Decisions that look odd but are deliberate:
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- **No `small_model`.** The router runs `--models-max 1`; any second model id evicts the resident one.
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With `small_model` unset, title generation falls back to the session's model. Subagents carry no
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pinned model for the same reason — the task tool uses the caller's model.
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- **No `temperature` / `top_p` from opencode.** Verified by capturing request bodies: only
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`max_tokens` is sent, so the router presets own sampling.
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- **`reasoning: true`** only on the presets that actually think (no `reasoning-budget = 0`);
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GLM also replays `reasoning_content` in history because its preset sets `reasoning-preserve`.
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- **`snapshot: false`** — file-change undo is not used. **`tool_output`** capped at 200 lines /
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16 KiB for 24k-context models. **`compaction.reserved`/`prune`** are inert at this context size.
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- **`question: allow`** everywhere so agents ask instead of guessing.
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## Agents
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`auto` is the default agent and cycles with `build` and `plan` on Tab. It runs without prompts except
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for the serious set — git history rewriting and pushing, `rm`, killing processes, `systemctl`,
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network transfers, package installs — which ask, and `sudo`/`dd`/`mkfs`/secret-file reads, which are
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denied. Colors: build primary, plan info, auto yellow. All three cap agentic iterations at 30.
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Permission rules resolve **global first, agent rules appended, last match wins**, so an agent that
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wants a blanket rule must restate its own denies after it (the `auto` block does).
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## GPT overlay
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`openai-gpt.jsonc` is a template. opencode 2.x ignores `OPENCODE_CONFIG`, but it merges a second
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global file named `opencode.jsonc`. `fish/config.fish` links `opencode.jsonc → openai-gpt.jsonc`
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only on a host whose `~/.local/share/opencode/auth.json` holds an OpenAI credential (from
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`opencode auth login`), and removes the link again when the login is gone.
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## Host overlays
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`lw/.config/opencode/opencode.json` is a fork of the common file that adds the laptop's local CPU
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llama.cpp provider (`lwcpp`). Mirror every edit between the two.
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## Lifting pieces into a stock opencode
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Everything is plain files: copy `agents/`, `commands/`, `plugins/verbose/` or the theme into your own
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`~/.config/opencode/`. The plugin needs 2.x (it uses the `keymap.layer` / `dispatch` API and is
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discovered as a directory under `plugins/`). The permission blocks in `opencode.json` are independent
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of the providers and can be pasted as-is.
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