fabro/docs/internal
fabro-sh-0530[bot] e8f0aceee8
refactor: rationalize server secret scopes (vault-only for optional int… (#401)
## Summary

Separates Fabro server secrets into two explicit scopes: **bootstrap**
secrets that come from process env or `server.env`, and **optional
integration** secrets that come exclusively from the vault. This makes
secret resolution simple and predictable, and removes all `process env →
server.env` fallback paths for optional integrations such as GitHub App,
Slack, Daytona, Brave Search, and LLM provider keys.

## What changed

**New `ToolSecrets` struct in `fabro-agent`** — Brave Search API key is
now passed explicitly through `SessionOptions.tool_secrets` rather than
read from process env inside the tool. The standalone CLI reads the key
at the CLI boundary (with an explicit
`#[expect(clippy::disallowed_methods)]` annotation); the server will
read it from the vault. The error message changes from
`"BRAVE_SEARCH_API_KEY environment variable is not set"` to
`"BRAVE_SEARCH_API_KEY is not configured"`.

**`VaultCredentialSource::vault_only` constructor in `fabro-auth`** —
Adds a constructor that passes `|_| None` as the env lookup, ensuring
the server LLM credential source never resolves provider keys from
process env.

**GitHub App secrets move to vault in install flows** — Both the CLI
`fabro install github` path and the browser install finish handler now
write `GITHUB_APP_PRIVATE_KEY`, `GITHUB_APP_CLIENT_SECRET`, and
`GITHUB_APP_WEBHOOK_SECRET` to the vault instead of `server.env`.
Switching strategies removes stale secrets from the other strategy's
storage location. The `vault_set` field type changes from `Vec<(String,
String)>` to `Vec<VaultSecretWrite>` to carry per-secret type metadata
(file vs. token).

**`fabro-vault` gains a `fabro-static` dependency** — Needed so the
vault crate can reference canonical env-var names from the shared
registry without a cycle.

**`GH_TOKEN` fallback removed** — `GITHUB_TOKEN` is now read from the
vault only; the changelog and `server-configuration.mdx` note drops
mention of `GH_TOKEN` as an accepted fallback.

**Version bump** — Workspace crates promoted from `0.244.0-nightly.0` to
`0.244.0`.

**Docs** — Internal strategy doc, public admin docs (Docker, Railway,
server-configuration, security, troubleshooting), and integration docs
(GitHub, Slack, Daytona, Brave Search, LiteLLM, tools reference, models)
all updated to reflect vault-only optional secrets and direct users to
`fabro secret set` rather than process env or `server.env`.

### Plan Summary

- **Task 1** (secret registry) — not yet present in this diff;
classification lives in the places that consume it.
- **Task 3–6** (vault-only lookups for GitHub, Slack, Daytona, LLM) —
implemented via `vault_only` constructor, `tool_secrets` threading, and
install-path changes.
- **Task 7** (Brave Search explicit injection) — `ToolSecrets`,
`register_core_tools` wiring, CLI boundary read.
- **Task 8** (install persistence) — GitHub App secrets written to
vault; token strategy writes `GITHUB_TOKEN` to vault and clears app
vault keys; app strategy clears `GITHUB_TOKEN` vault key.
- **Task 9** (docs) — all public and internal docs updated.


### Fabro Details

<details>
<summary>Ran 0 stages in 155m 26s for $60.85</summary>

| Stage | Duration | Cost | Retries |
|---|---|---|---|
| **Total** | **155m 26s** | **$60.85** | **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 && { command -v rg >/dev/null 2>&1 || { echo 'rg is required for verify'; exit 127; }; } && ! 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: Bryan Helmkamp <bryan@brynary.com>
2026-05-25 17:26:01 -04:00
..
assets/brand docs: move published docs under docs/public 2026-04-26 21:19:46 -04:00
demo chore(demo): move simplify prompt to prompts/ alongside graphs 2026-04-30 08:35:48 -04:00
licenses docs: move published docs under docs/public 2026-04-26 21:19:46 -04:00
product refactor(workflow): remove retro stage (#230) 2026-05-09 10:18:20 -04:00
cargo-target-apfs-churn-plan.md docs: commit plan 2026-04-28 09:46:52 -07:00
cli-workflow-coupling-audit.md refactor(types): remove stage status compatibility 2026-04-30 06:48:47 -04:00
error-handling-strategy.md docs: clarify chain-rendering boundary in error strategy 2026-05-04 11:28:28 -04:00
event-schema-competitive-analysis.md docs: move published docs under docs/public 2026-04-26 21:19:46 -04:00
events-strategy.md refactor(workflow): remove retro stage (#230) 2026-05-09 10:18:20 -04:00
events.md Add agent context observability events (memory, skills, MCP tools) (#356) 2026-05-22 19:06:00 -04:00
fabro-event-schema-v2-concrete-shape.md Add ACP backend support (#237) 2026-05-11 23:39:43 -04:00
fabro-event-schema-v2-proposal.md docs: move published docs under docs/public 2026-04-26 21:19:46 -04:00
llm-client-resolution.md docs(llm): finish configurable provider cleanup (#260) 2026-05-13 17:17:54 -04:00
logging-strategy.md feat(cli): polish foreground TTY logs 2026-05-06 15:31:25 -04:00
mcp-server-qa-test-plan.md Replace queued with pending/runnable and add approval flow (web + API s… (#371) 2026-05-23 15:34:33 -04:00
migrations-strategy.md refactor: rationalize server secret scopes (vault-only for optional int… (#401) 2026-05-25 17:26:01 -04:00
plan-events-as-source-of-truth-follow-ups.md refactor(run-projection): use stage vocabulary 2026-05-01 19:56:22 -04:00
plan-events-as-source-of-truth.md Make git metadata sandbox-native 2026-04-27 21:43:15 -07:00
run-directory-keys.md refactor(workflow): remove retro stage (#230) 2026-05-09 10:18:20 -04:00
server-secrets-strategy.md refactor: rationalize server secret scopes (vault-only for optional int… (#401) 2026-05-25 17:26:01 -04:00
slow-test-opportunities-2026-04-07.md docs: move published docs under docs/public 2026-04-26 21:19:46 -04:00
testing-strategy.md docs: move published docs under docs/public 2026-04-26 21:19:46 -04:00
updating-web-screenshots.md refactor(workflow): remove retro stage (#230) 2026-05-09 10:18:20 -04:00