init run

⚒️ Generated with [Fabro](https://fabro.sh)

graph.fabro

@@ -0,0 +1,37 @@
+digraph ImplementAndSimplify {
+    graph [
+        goal="Implement and simplify",
+        model_stylesheet="
+            * { backend: api; model: claude-opus-4-6;}
+        "
+    ]
+    rankdir=LR
+
+    start [shape=Mdiamond, label="Start"]
+    exit  [shape=Msquare, label="Exit"]
+
+    toolchain         [label="Toolchain", shape=parallelogram, script="command -v cargo >/dev/null || { curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y && sudo ln -sf $HOME/.cargo/bin/* /usr/local/bin/; }; cargo --version 2>&1", max_retries=0]
+    preflight_compile [label="Preflight Compile", shape=parallelogram, script="cargo check -q --workspace 2>&1", max_retries=0]
+    preflight_lint    [label="Preflight Lint", shape=parallelogram, script="cargo clippy -q --workspace -- -D warnings 2>&1", max_retries=0]
+    fix_lints         [label="Fix Lints", prompt="The preflight lint step failed. Read the build output from context and fix all clippy lint warnings.", max_visits=3]
+    implement         [label="Implement", prompt="Read the plan file referenced in the goal and implement every step. Make all the code changes described in the plan. Use red/green TDD."]
+    simplify_opus     [label="Simplify (Opus)", prompt="@prompts/simplify.md"]
+    simplify_gpt      [label="Simplify (GPT-54)", prompt="@prompts/simplify.md", model="gpt-54"]
+    verify            [label="Verify", shape=parallelogram, script="cargo clippy -q --workspace -- -D warnings 2>&1 && cargo nextest run --cargo-quiet --workspace --status-level fail 2>&1", goal_gate=true, retry_target="fixup"]
+    fixup             [label="Fixup", prompt="The verify step failed. Read the build output from context and fix all clippy lint warnings and test failures.", max_visits=3]
+    fmt               [label="Format", shape=parallelogram, script="cargo fmt --all 2>&1", max_retries=0]
+
+    start -> toolchain
+    toolchain -> preflight_compile [condition="outcome=success"]
+    toolchain -> exit
+    preflight_compile -> preflight_lint [condition="outcome=success"]
+    preflight_compile -> exit
+    preflight_lint -> implement [condition="outcome=success"]
+    preflight_lint -> fix_lints
+    fix_lints -> preflight_lint
+    implement -> simplify_opus -> simplify_gpt -> verify
+    verify -> fmt   [condition="outcome=success"]
+    verify -> fixup
+    fixup -> verify
+    fmt -> exit
+}

manifest.json

@@ -0,0 +1,13 @@
+{
+  "run_id": "01KM6JGQQDB57HD9DCDRGN4FSW",
+  "workflow_name": "ImplementAndSimplify",
+  "goal": "# Plan: Support Anthropic fast mode (`speed: fast`) — Issue #120\n\n## Context\n\nAnthropic's API supports [fast mode](https://platform.claude.com/docs/en/build-with-claude/fast-mode) (beta) for Claude Opus 4.6 — up to 2.5x faster output at 6x pricing ($30/$150 per MTok vs $5/$25 standard). The API requires:\n- `\"speed\": \"fast\"` top-level field in request body\n- `anthropic-beta: fast-mode-2026-02-01` header\n- Response includes `usage.speed` confirming actual speed used\n\nThis follows the same pattern as `reasoning_effort`, which is already implemented end-to-end.\n\n## Implementation\n\n### 1. Foundation: `lib/crates/fabro-llm/src/types.rs`\n\n- Add `speed: Option<String>` to `Request` (after `reasoning_effort`, line ~454)\n- Add `speed: Option<String>` to `Usage` (before `raw`, line ~372)\n- In `Usage::Add` impl (line ~389): propagate `speed` from `self` (left-hand side wins, since all requests in a session use the same speed)\n\n### 2. Graph layer: `lib/crates/fabro-graphviz/src/graph/types.rs`\n\nAdd after `reasoning_effort()` (~line 211):\n```rust\n#[must_use]\npub fn speed(&self) -> Option<&str> {\n    self.str_attr(\"speed\")\n}\n```\nReturns `Option` (no default) — unlike `reasoning_effort` which defaults to \"high\", speed defaults to None (standard) since fast mode is 6x cost.\n\n### 3. Stylesheet: `lib/crates/fabro-workflows/src/stylesheet.rs`\n\nAdd `\"speed\"` to `STYLESHEET_PROPERTIES` array (line 5):\n```rust\nconst STYLESHEET_PROPERTIES: &[&str] = &[\"model\", \"provider\", \"reasoning_effort\", \"speed\", \"backend\"];\n```\n\n### 4. Agent config: `lib/crates/fabro-agent/src/config.rs`\n\n- Add `pub speed: Option<String>` field to `SessionConfig` (line ~66)\n- Add `speed: None` to `Default` impl (line ~135)\n\n### 5. Session wiring: `lib/crates/fabro-agent/src/session.rs`\n\n- Add `speed: self.config.speed.clone()` to Request construction (~line 908)\n- Add `set_speed()` method analogous to `set_reasoning_effort()` (~line 458)\n\n### 6. Anthropic provider: `lib/crates/fabro-llm/src/providers/anthropic.rs`\n\n**6a. `ApiRequest` struct** (~line 87): Add `speed: Option<String>` field\n\n**6b. Beta header constant** (~line 510):\n```rust\nconst FAST_MODE_BETA_HEADER: &str = \"fast-mode-2026-02-01\";\n```\n\n**6c. `build_beta_header()`** (~line 582): Add `include_fast_mode_header: bool` parameter. Inject fast-mode header (same pattern as cache header).\n\n**6d. `build_api_request()`** (~line 1082):\n- Set `speed: request.speed.clone()` on `ApiRequest`\n- Compute `let is_fast = request.speed.as_deref() == Some(\"fast\")`\n- Pass `is_fast` to `build_beta_header()`\n\n**6e. `ApiUsage`** (~line 160): Add `speed: Option<String>` field\n\n**6f. Response parsing**: Map `api_resp.usage.speed` → `Usage.speed` in both:\n- Non-streaming path (~line 1192)\n- Streaming `message_start` handler (~line 690)\n\n### 7. Usage tracking: `lib/crates/fabro-workflows/src/outcome.rs`\n\n- Add `speed: Option<String>` to `StageUsage` (with `serde(default, skip_serializing_if)`)\n- Update `From<&StageUsage> for Usage` to include `speed`\n\n### 8. Cost multiplier: `lib/crates/fabro-workflows/src/cost.rs`\n\nApply 6x multiplier when `speed == \"fast\"`:\n```rust\nlet multiplier = if usage.speed.as_deref() == Some(\"fast\") { 6.0 } else { 1.0 };\n// Apply multiplier to final cost\n```\n\n### 9. Backend wiring: `lib/crates/fabro-workflows/src/backend/api.rs`\n\n- SessionConfig construction (~line 195): add `speed: node.speed().map(String::from)`\n- Prompt-mode Request construction (~line 285): add `speed: node.speed().map(String::from)`\n- Both StageUsage constructions (~lines 389, 589): add `speed: response.usage.speed.clone()` / `total_usage.speed.clone()`\n\n### 10. Tests\n\n- `anthropic.rs`: `build_api_request_sets_speed`, `build_api_request_injects_fast_mode_beta_header`, `beta_header_includes_both_cache_and_fast_mode`\n- `cost.rs`: `compute_stage_cost_fast_mode_6x_multiplier`\n- `stylesheet.rs`: `apply_speed_property`\n- `session.rs`: `set_speed_mid_session`\n- Update all existing struct literals (`Request`, `Usage`, `SessionConfig`, `StageUsage`, `ApiRequest`, `ApiUsage`) in tests to include `speed: None`\n\n## Implementation order\n\n1. `types.rs` (Request + Usage) — everything depends on this\n2. `graph/types.rs` + `stylesheet.rs` — graph layer\n3. `config.rs` + `session.rs` — agent layer\n4. `anthropic.rs` — provider (ApiRequest, beta header, response parsing)\n5. `outcome.rs` + `cost.rs` — usage tracking\n6. `backend/api.rs` — final wiring\n7. Tests throughout\n\n## Verification\n\n```\ncargo build --workspace\ncargo test --workspace\ncargo fmt --check --all\ncargo clippy --workspace -- -D warnings\n```\n",
+  "start_time": "2026-03-20T21:30:57.629554Z",
+  "node_count": 12,
+  "edge_count": 15,
+  "run_branch": "fabro/run/01KM6JGQQDB57HD9DCDRGN4FSW",
+  "base_sha": "09809ad51c9552da09282788379c8f8b373c0e1b",
+  "base_branch": "main",
+  "workflow_slug": "implement",
+  "host_repo_path": "/Users/bhelmkamp/p/fabro-sh/fabro"
+}

sandbox.json

@@ -0,0 +1,5 @@
+{
+  "provider": "daytona",
+  "working_directory": "/home/daytona/workspace",
+  "identifier": "fabro-01KM6JGQQDB57HD9DCDRGN4FSW"
+}