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Raven Scott e2b721d19f complete shell 100-item plan across parser, execution, security, and docs 
Implement the full BareOS shell roadmap end-to-end, including grammar/tokenization
diagnostics, expansion/runtime hardening, execution graph tooling, builtins/job-control
stability, policy/sandbox controls, and release/traceability documentation updates.

- Add shell grammar baseline and diagnostics primitives:
  - introduce `docs/reference/shell-grammar.md` with lexer modes and EBNF contract
  - add rich diagnostic tokenizer output (mode + span metadata) via `tokenizeBareShellLineDetailed`
  - export structured parse snapshot helpers (`bareOsShellAstSnapshot`) and shell error kinds
  - add determinism coverage for tokenizer and AST snapshot outputs

- Harden expansion semantics and guardrails:
  - enforce expansion byte budgets (`BARE_OS_SHELL_EXPANSION_MAX_BYTES`)
  - add expansion trace hooks (`BARE_OS_SHELL_EXPANSION_TRACE`) with stage-level rows
  - add expansion recursion depth limits (`BARE_OS_SHELL_EXPANSION_MAX_DEPTH`)
  - tighten POSIX-mode arithmetic invalid-token diagnostics
  - preserve declared expansion ordering and document it in code/docs

- Extend redirection/pipeline execution model:
  - add normalized redirection planner (`planShellRedirections`) independent of side effects
  - add execution graph builder/debug surface (`buildShellExecutionGraph`)
  - support `<<-` operator in tokenizer/parser paths
  - add pipeline stage timeout safety (`BARE_OS_SHELL_PIPELINE_STAGE_TIMEOUT_MS`)
  - keep pipefail/pipestatus behavior verified with integration tests

- Improve builtins and control-flow reliability:
  - expand `read` builtin support:
    - `-r` raw mode
    - `-d` single-char delimiter
    - `-t` timeout semantics
  - refine wait/jobs semantics:
    - stable `jobs -l` parseable format expectations
    - synthetic pid mapping (`wait 410x`) and `wait all` support
  - keep trap registration/listing behavior deterministic and test-covered
  - add trap signal dispatch helper (`dispatchShellTrapSignal`) with normalization

- Add security and policy enforcement hooks:
  - command deny/allow policy gates:
    - `BARE_OS_SHELL_DENY_COMMANDS`
    - `BARE_OS_SHELL_ALLOW_COMMANDS`
  - sandbox mode (`BARE_OS_SHELL_SANDBOX`) to block external command execution
  - redirect path safety guard (`BARE_OS_SHELL_REDIRECT_GUARD`) for pseudo-path/traversal risks
  - emit structured shell audit event rows (`ctx.shellAuditEvents`) for start/error/finish

- Improve interactive UX resilience:
  - add prompt-hook timeout protection in fish readline:
    - `resolveShellPromptHookSegment`
    - env control `BARE_OS_SHELL_PROMPT_HOOK_TIMEOUT_MS`
  - ensure prompt segment resolution is non-blocking and safe on timeout/error

- Add reliability/performance artifacts and shell fast lane:
  - add `scripts/bench-shell-phases.mjs` for shell microbench sanity checks
  - add `scripts/gen-shell-reliability-report.mjs` and generate reliability JSON artifact
  - add root scripts:
    - `test:shell-fast`
    - `bench:shell`
    - `report:shell-reliability`

- Expand shell-focused docs and traceability:
  - add:
    - `docs/reference/shell-unsupported-behavior.md`
    - `docs/reference/shell-troubleshooting.md`
  - add contributor guides:
    - `developer-guide/17-how-to-add-shell-builtin.md`
    - `developer-guide/18-how-to-add-shell-grammar-feature.md`
  - update indexes/traceability/release gate docs:
    - `docs/reference/README.md`
    - `docs/reference/posix-issue7-traceability.md`
    - `docs/reference/environment-and-posix-appendix.md`
    - `docs/release-checklist.md`
    - `developer-guide/README.md`
    - `scripts/README.md`

- Add and update shell regression tests in `packages/bare-os-booter/test.js` for:
  - tokenizer spans/modes and deterministic output
  - AST snapshot schema/shape
  - redirection planner and execution graph behavior
  - expansion trace and strict arithmetic paths
  - `<<-` support
  - pipeline stage timeout handling
  - `read` delimiter/raw/timeout semantics
  - jobs/wait parseability and selection semantics
  - trap dispatch and normalization behavior
  - policy/sandbox/redirect-guard/audit-event pathways

Validation:
- `npm run test -w bare-os-booter`
- `npm run test:shell-bracket -w bare-os-booter`
- `npm run test:shell-fast`
- `npm run report:shell-reliability`
2026-04-26 23:17:20 -04:00
..
kernel
complete shell 100-item plan across parser, execution, security, and docs
2026-04-26 23:17:20 -04:00
lib
chore(plan): cancel end-to-end seeder-to-booter smoke harness task
2026-04-26 22:28:21 -04:00
test
chore(plan): cancel end-to-end seeder-to-booter smoke harness task
2026-04-26 22:28:21 -04:00
index.js
chore(plan): cancel end-to-end seeder-to-booter smoke harness task
2026-04-26 22:28:21 -04:00
package.json
Updates
2026-04-26 15:49:55 -04:00
README.md
Further MD Fixes
2026-04-25 23:04:56 -04:00

README.md

bare-os-seeder

Pear / Bare application that owns the canonical system Hyperdrive: it walks a kernel tree on disk, writes /boot/init.js, /bin/*, /etc/* into the drive (no host temp dirs), builds a 512-byte MBR with the drive key, joins Hyperswarm on bare-os-v1, and serves MBR block reads + Protomux bare-os-v1 replication to peers.

When to use: run the seeder when you want to publish the canonical system image for booters to replicate (typical dev: one terminal with npm run os:seeder). Eligible already-booted peers can later mirror block 0, but the seeder remains the trust anchor for initial publication.

Documentation: Concepts — Boot · Seeder reference · User manual ch.3 · Protocol reference.

Run

From package directory (after npm ci at repo root):

node index.js

Or with Bare/Pear:

npm run pear:dev

From repo root (recommended — fixes workspace node_modules for Pear):

npm run os:seeder

Environment

  • BARE_OS_KERNEL_ROOT — Absolute path to kernel tree to stage (default: package kernel/ vendored copy, or repo kernel/ under Node file: URL)
  • BARE_OS_HOST_DATA — Base directory for host state (default ~/.bare-os)
  • BARE_OS_SEED_STORE — Corestore directory (default ~/.bare-os/corestore/seeder)
  • BARE_OS_SEED_CAPABILITY_ATTESTATION_JSON — Optional JSON string for seed RPC bare_os.capability_attestation (operators verify on host; guest does not crypto-verify)

Pear vs Node

  • import.meta.url is file: — seeder may dynamically import bare-os-coreutils/build.mjs and bare-os-bare-libs/build.mjs, rebuilding /bin and kernel/lib/bare before staging.
  • pear: bundle — coreutils and /lib/bare bundles must be pre-built into kernel/; run npm run build -w bare-os-coreutils and npm run build -w bare-os-bare-libs before pear run (root npm run os:seeder does both).

Layout

  • index.js — Entry: Corestore, Hyperdrive, stageKernelTree, swarm, setupSeedChannel (RPCs include optional bare_os.snapshot_hints and bare_os.peer_firewall_stats when implemented)
  • lib/paths.js — packageRootDir, kernel root, Corestore path (Pear RTI–aware)
  • kernel/ — Vendored mirror of repo kernel/ for Pear staging — must match kernel/ byte-for-byte (npm test pretest runs scripts/verify-kernel-seeder-parity.mjs)

Dependencies

bare-os-protocol (workspace), hyperdrive, corestore, hyperswarm, protomux, b4a, compact-encoding, safety-catch, bare-os.

See also

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