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https://github.com/fabro-sh/fabro.git
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3fb4b5bc1b
## Summary
Adds `output_schema` and `output_retries` node attributes that validate
structured LLM output and perform corrective repair turns inside the
same conversation context before failing the node. Also adds sortable
columns (Repo, Title, Workflow, Changes) to the runs list view and hides
the pager when the result set is small.
### Plan Summary
- **Task 1**: `Node::output_schema()` / `Node::output_retries()`
accessors in `fabro-types`, with `@`-prefix file-reference support in
static validation and file inlining.
- **Task 2**: New `handler/structured_output.rs` module —
`OutputSchemaKind` (Routing / JsonSchema), balanced JSON scanning,
validation, repair-message generation, `apply_validated_output`, and
`exhausted_failure_outcome`.
- **Task 3**: `extract_status_fields` moved to `structured_output.rs`;
agent routing fallback chain (response → `status.json` → last file
touched) preserved and delegated to `validate_agent_output_sources`.
- **Task 4/5**: `one_shot` (prompt) and `run` (agent) both loop over LLM
calls, appending the prior assistant response and a corrective user turn
on validation failure, up to `output_retries` times.
- **Task 6**: ACP backend rejects `output_schema` immediately with a
clear error before launching any process.
- **Task 7**: `outputs.mdx` and `dot-language.mdx` updated with
attribute docs, repair semantics, and `output.{node_id}` context key.
## What changed and why
```mermaid
TB
graph
A[Node attrs\noutput_schema / output_retries] --> B[structured_output.rs\nparse / validate / repair]
B --> C{OutputSchemaKind}
C -->|Routing| D[validate routing fields\n→ outcome routing]
C -->|JsonSchema| E[jsonschema validator\n→ context_updates.output.node_id]
B --> F[exhausted_failure_outcome\nterminal, non-retryable]
G[prompt handler\none_shot loop] --> B
H[agent handler\nrun loop + session.process_input] --> B
I[ACP backend] -->|output_schema present| J[Validation error\nno process launched]
```
**`output_schema="routing"`** tightens existing loose routing
extraction: malformed fields now fail validation and trigger a repair
turn rather than being silently ignored. The fallback priority (response
text → `status.json` → last file touched) is preserved but only for the
`NoJsonObject`/`NoRelevantJsonObject` error kinds that allow it.
**Custom schemas** (`@path` inlined to JSON Schema) validate the last
JSON object in the response against a precompiled
`jsonschema::Validator`. On success, the parsed value is stored at
`output.{node_id}` in `context_updates` for downstream nodes.
**Repair loop** — prompt nodes keep the prior assistant response in the
message list and append a corrective user message; agent API sessions
call `session.process_input` on the live session. Both paths aggregate
token usage across all turns. Exhausting `output_retries` returns a
terminal `OutputSchemaValidation` error (non-retryable, deterministic
failure category) that does not consume `max_retries`.
**ACP guardrail** rejects `output_schema` before spawning any
subprocess, with a clear `"output_schema is not supported with
backend=\"acp\" in this release"` message.
The `one_shot` refactor also extracted `complete_one_shot_request` and
`OneShotCompletion` to separate fallback-chain logic from the repair
loop, removing duplication.
### Fabro Details
<details>
<summary>Ran 9 stages in 74m 9s for $31.92</summary>
| Stage | Duration | Cost | Retries |
|---|---|---|---|
| start | 0s | – | 0 |
| toolchain | 1s | – | 0 |
| preflight_compile | 2m 16s | – | 0 |
| preflight_lint | 2m 28s | – | 0 |
| implement | 24m 59s | $17.96 | 0 |
| simplify_opus | 16m 36s | $9.95 | 0 |
| simplify_gpt | 3m 20s | $1.75 | 0 |
| verify | 6m 29s | – | 0 |
| fixup | 17m 13s | $2.26 | 0 |
| **Total** | **74m 9s** | **$31.92** | **0** |
</details>
<details>
<summary>Ran <code>ImplementPlan.fabro</code> (11 nodes and 14
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.", model="gpt-55", reasoning_effort="xhigh"]
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="git fetch origin main 2>&1 && git merge --no-edit --no-stat origin/main 2>&1 && cargo +nightly-2026-04-14 fmt --all 2>&1 && cargo dev docs refresh 2>&1 && cargo +nightly-2026-04-14 fmt --check --all 2>&1 && ! rg -n 'AuthMode::Disabled|RunAuthMethod|RunSubjectProvenance|\bActorRef\b|\bActorKind\b|AuthenticatedSubject|AuthenticatedService|AuthorizeRunScoped|AuthorizeRunBlob|AuthorizeStageArtifact|AuthorizeCommandLog|auth_method\s*==\s*\"disabled\"' lib/crates apps lib/packages docs/public/api-reference/fabro-api.yaml 2>&1 && cargo +nightly-2026-04-14 clippy --workspace --all-targets -- -D warnings 2>&1 && cargo nextest run --workspace --status-level slow --profile ci 2>&1 && cargo dev docs check 2>&1 && bun install --frozen-lockfile 2>&1 && (cd apps/fabro-web && bun run typecheck) 2>&1 && (cd apps/fabro-web && bun run test) 2>&1 && (cd lib/packages/fabro-api-client && bun run typecheck) 2>&1 && cargo dev build -- -p fabro-cli --release 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 format, clippy, Rust test, docs, TypeScript typecheck/test, and build failures.", max_visits=3]
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 -> exit [condition="outcome=succeeded"]
verify -> fixup
fixup -> verify
}
```
</details>
⚒️ Generated with [Fabro](https://fabro.sh)
---------
Co-authored-by: Fabro <noreply@fabro.sh>
Co-authored-by: Fabro <fabro@fabro.sh>
Co-authored-by: Bryan Helmkamp <bryan@brynary.com>
|
||
|---|---|---|
| .. | ||
| acknowledgements.mdx | ||
| architecture.mdx | ||
| cli.mdx | ||
| dot-language.mdx | ||
| run-directory.mdx | ||
| sdk.mdx | ||
| server-operations.mdx | ||
| shell-completions.mdx | ||
| user-configuration.mdx | ||
| verifying-releases.mdx | ||