fabro-sh-0530[bot] 7769c5cec1 Generate Fabro PR titles and bodies with structured output (#208) ... ### Summary Fabro now asks the LLM for a structured PR title and reviewer-sized body instead of deriving every title from the workflow goal. This ports the compound-engineering PR-writing recipe into the existing pull request pipeline while preserving Fabro's programmatically appended trailing sections. ### What changed - Replaced plain-text PR body generation with `generate_object` and a strict `{ title, body }` schema. - Added the sizing matrix, writing principles, visual-aid guidance, and duplicate-section guardrails to the PR prompt. - Added model-aware goal/plan/diff truncation caps, with unknown or smaller-context models using the conservative tier. - Kept goal-derived titles as a narrow fallback only when the LLM returns a usable body with an empty title. - Enforced a 72-character title cap across both LLM-generated and fallback titles. - Updated workflow, server, and integration tests for structured responses, fallback behavior, title truncation, and blank-body failures. ### Plan Summary - Move PR content generation to structured output. - Keep existing body assembly and appended sections intact. - Add coverage for title fallback and validation edge cases. ### Fabro Details <details> <summary>Ran 9 stages in 42m 43s for $44.59</summary> | Stage | Duration | Cost | Retries | |---|---|---|---| | start | 0s | – | 0 | | toolchain | 1s | – | 0 | | preflight_compile | 2m 3s | – | 0 | | preflight_lint | 2m 13s | – | 0 | | implement | 15m 8s | $6.37 | 0 | | simplify_opus | 11m 16s | $3.53 | 0 | | simplify_gpt | 9m 5s | $34.69 | 0 | | verify | 2m 17s | – | 0 | | fmt | 2s | – | 0 | | **Total** | **42m 43s** | **$44.59** | **0** | </details> <details> <summary>Ran <code>ImplementPlan.fabro</code> (12 nodes and 15 edges)</summary> ```dot digraph ImplementPlan { graph [ goal="Implement and simplify", model_stylesheet=" * { model: claude-opus-4-7; } " ] 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 +nightly-2026-04-14 clippy -q --workspace --all-targets -- -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-55)", prompt="@prompts/simplify.md", model="gpt-55"] verify [label="Verify", shape=parallelogram, script="cargo +nightly-2026-04-14 clippy -q --workspace --all-targets -- -D warnings 2>&1 && cargo nextest run --cargo-quiet --workspace --status-level fail 2>&1 && cargo dev docs refresh 2>&1 && cargo dev docs check 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, test failures, and generated docs errors.", max_visits=3] fmt [label="Format", shape=parallelogram, script="cargo +nightly-2026-04-14 fmt --all 2>&1", max_retries=0] start -> toolchain toolchain -> preflight_compile [condition="outcome=succeeded"] toolchain -> exit preflight_compile -> preflight_lint [condition="outcome=succeeded"] preflight_compile -> exit preflight_lint -> implement [condition="outcome=succeeded"] preflight_lint -> fix_lints fix_lints -> preflight_lint implement -> simplify_opus -> simplify_gpt -> verify verify -> fmt [condition="outcome=succeeded"] verify -> fixup fixup -> verify fmt -> exit } ``` </details> ⚒️ Generated with [Fabro](https://fabro.sh) --------- Co-authored-by: Fabro <noreply@fabro.sh>		2026-05-04 22:00:15 -04:00
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crates	Generate Fabro PR titles and bodies with structured output (#208)	2026-05-04 22:00:15 -04:00
packages/fabro-api-client	refactor(api): reuse board column contract across clients	2026-05-04 15:52:24 -04:00