# Changelog

All notable changes to Assay are documented here.

## [0.9.0] - 2026-04-11

### Added

- **Temporal workflow engine** — full workflow execution via Lua coroutines.
  `temporal.worker()` now supports both activities and workflows. Each
  workflow runs as a coroutine with a deterministic `ctx` object:

  - `ctx:execute_activity(name, input, opts?)` — schedule activity, block
    until complete. Supports retry policies, timeouts, heartbeats. On
    replay, returns cached results without re-executing.
  - `ctx:wait_signal(name, opts?)` — block until external signal or
    timeout. Signals are buffered (safe to call after signal arrives).
  - `ctx:sleep(seconds)` — deterministic timer via Temporal, not wall clock.
  - `ctx:side_effect(fn)` — run non-deterministic function (IDs, timestamps).
  - `ctx:workflow_info()` — workflow metadata (id, type, namespace, attempt).

  Activities and workflows can be registered together in one worker:
  ```lua
  temporal.worker({
    url = "temporal-frontend:7233",
    task_queue = "promotions",
    activities = { update_gitops = function(input) ... end },
    workflows = {
      PromotionWorkflow = function(ctx, input)
        local approval = ctx:wait_signal("approve", { timeout = 86400 })
        local commit = ctx:execute_activity("update_gitops", input)
        return { status = "done", commit_id = commit.id }
      end,
    },
  })
  ```

- **`markdown.to_html(source)`** — new builtin for Markdown to HTML
  conversion via pulldown-cmark. Supports tables, strikethrough, and task
  lists. Zero binary size overhead (pulldown-cmark was already in the
  dependency tree via temporalio crates).

- **`http.serve()` wildcard routes** — routes ending with `/*` match any
  path with that prefix. More specific wildcards take priority:
  ```lua
  http.serve(8080, {
    GET = {
      ["/api/*"] = function(req) ... end,  -- matches /api/users/123
      ["/*"] = function(req) ... end,      -- catches everything else
    },
  })
  ```

- **Assay builds its own documentation site**. `site/build.lua` replaces
  the bash/awk/npx pipeline. Module count (54) is computed automatically
  from `src/lua/builtins/mod.rs` and `stdlib/**/*.lua`. Site source lives
  under `site/`, build output goes to `build/site/` (gitignored).

- **Per-module documentation pages**. 36 markdown source files under
  `docs/modules/` are the single source of truth. `build.lua` generates
  individual HTML pages, a module index, and `llms-full.txt` for LLM agents.

- **`site/serve.lua`** — assay serves its own docs site using wildcard
  routes. 40 lines of Lua, zero external dependencies.

- **`fs.read_bytes(path)` / `fs.write_bytes(path, data)`** — binary-safe
  file I/O. Lua strings can hold arbitrary bytes, so these work for images,
  WASM, protobuf, compressed data, etc.

- **Pagefind search** — full-text search across all docs pages via Ctrl+K
  modal. Indexed at build time (~100KB client bundle), runs entirely in
  the browser.

### Changed

- **`http.serve()` binary response body** — response `body` field now
  preserves raw bytes (read via `mlua::String`) instead of forcing UTF-8
  conversion. Binary assets (WASM, images) serve correctly.

- Version bump to 0.9.0 (from 0.8.4).
- Site source consolidated under `site/` (was split across `site/`,
  `site-partials/`, `site-static/`).
- Nav redesign: no underlines, subtle active page pill, frosted glass
  header, theme toggle persistence across pages.
- `deploy.yml` updated: `cargo build` → `assay site/build.lua` → wrangler
  deploys `build/site/`.

## [0.8.4] - 2026-04-11

### Added

- **`assay.ory.keto` — OPL permit support and table-style check()**.
  `k:check()` now accepts a table argument in addition to positional
  args, making OPL permit checks natural:
  ```lua
  k:check({ namespace = "command_center", object = "cc",
            relation = "trigger", subject_id = "user:uuid" })
  ```
  Keto evaluates the OPL rewrite rules and returns true/false — no
  Lua-side capability mapping needed.

- **`k:batch_check(tuples)`** — check multiple permission tuples in a
  single call. Returns a list of booleans in the same order. Each
  entry uses the same table format as `check()`.

- **`assay.ory.kratos` — complete self-service flow coverage**.
  Three flow families that were missing are now implemented:

  - **Registration**: `c:submit_registration_flow(flow_id, payload, cookie?)`
    was missing entirely, making the registration API unusable.
  - **Recovery** (password reset): `c:create_recovery_flow(opts?)`,
    `c:get_recovery_flow(id, cookie?)`,
    `c:submit_recovery_flow(flow_id, payload, cookie?)`.
  - **Settings** (profile/password change): `c:create_settings_flow(cookie)`,
    `c:get_settings_flow(id, cookie?)`,
    `c:submit_settings_flow(flow_id, payload, cookie?)`.

### Fixed

- **`assay.ory.keto`**: `k:delete()` now supports subject_set tuples.
  Previously only `subject_id` was passed to the query string,
  silently ignoring subject_set-based tuples.

- **`assay.ory.keto`**: `build_query()` now URL-encodes parameter
  values. Previously special characters in subject IDs (e.g. `@` in
  email addresses) were passed raw, potentially corrupting the query
  string.

- **`assay.ory.kratos`**: `public_post()` now handles HTTP 422
  responses (Kratos returns 422 for browser flows that need a
  redirect after successful submission).

## [0.8.3] - 2026-04-07

### Added

- **`assay.ory.rbac`** — capability-based RBAC engine layered on top of
  Ory Keto. Define a policy once (role → capability set) and get user
  lookups, capability checks, and membership management for free.
  Users can hold multiple roles and the effective capability set is
  the union, which means proper separation of duties is enforceable
  at the authorization layer (e.g. an "approver" role can have
  `approve` without also getting `trigger`, even if it's listed
  above an "operator" role with `trigger`).

  Public surface:
    - `rbac.policy({namespace, keto, roles, default_role?})`
    - `p:user_roles(user_id)` — sorted by rank, highest first
    - `p:user_primary_role(user_id)` — for compact UI badges
    - `p:user_capabilities(user_id)` — union set
    - `p:user_has_capability(user_id, cap)` — single check
    - `p:add(user_id, role)` / `p:remove(user_id, role)` — idempotent
    - `p:list_members(role)` / `p:list_all_memberships()`
    - `p:reset_role(role)` — for bootstrap/seed scripts
    - `p:require_capability(cap, handler)` — http.serve middleware

- **`crypto.jwt_decode(token)`** — decode a JWT WITHOUT verifying its
  signature. Returns `{header, claims}` parsed from the base64url
  segments. Useful when the JWT travels through a trusted channel
  (your own session cookie set over TLS) and you just need to read
  the claims rather than verify them. For untrusted JWTs, verify the
  signature with a JWKS-aware verifier instead.

- **Nested stdlib module loading**: `require("assay.ory.kratos")` now
  resolves to `stdlib/ory/kratos.lua`. The stdlib and filesystem
  loaders translate dotted module paths into directory paths and try
  both `<path>.lua` and `<path>/init.lua`, matching standard Lua
  package loading conventions.

### Changed

- **BREAKING: Ory stack modules moved under `assay.ory.*`**. The flat
  top-level `assay.kratos`, `assay.hydra`, and `assay.keto` modules
  are now `assay.ory.kratos`, `assay.ory.hydra`, and `assay.ory.keto`.
  The convenience wrapper `require("assay.ory")` is unchanged and
  still returns `{kratos, hydra, keto, rbac}`.

  Migration: replace
    `require("assay.kratos")` → `require("assay.ory.kratos")`
    `require("assay.hydra")`  → `require("assay.ory.hydra")`
    `require("assay.keto")`   → `require("assay.ory.keto")`

  This is the right architectural shape: Ory-specific modules sit
  under the `assay.ory.*` umbrella alongside the new
  `assay.ory.rbac`, leaving room for `assay.<other-vendor>.*` later
  without polluting the top-level namespace.

## [0.8.2] - 2026-04-07

### Added

- **`assay.hydra` logout challenge methods**: completes the OIDC challenge
  trio (login, consent, logout). When an app calls Hydra's
  `/oauth2/sessions/logout` endpoint with `id_token_hint` and
  `post_logout_redirect_uri`, Hydra creates a logout request and redirects
  the browser to the configured `urls.logout` endpoint with a
  `logout_challenge` query param. The handler now has SDK methods to
  process these requests:
  - `c:get_logout_request(challenge)` — fetch the pending logout request
    (subject, sid, client, rp_initiated flag)
  - `c:accept_logout(challenge)` — invalidate the Hydra and Kratos sessions
    and get back the `redirect_to` URL pointing at the app's
    `post_logout_redirect_uri`
  - `c:reject_logout(challenge)` — for "stay signed in" UIs that let the
    user cancel the logout

  Symmetric with the existing login/consent challenge methods.

## [0.8.1] - 2026-04-07

### Fixed

- **`req.params` now URL-decodes query string values** in `http.serve`. Previously
  `?challenge=abc%3D` produced `req.params.challenge == "abc%3D"`, so consumers
  that re-encoded the value (such as `assay.hydra:get_login_request`) ended up
  double-encoding it to `abc%253D` and getting a 404 from the upstream service.
  Values are now decoded with `form_urlencoded::parse`, so `+` becomes a space
  and percent-escapes are decoded correctly. The raw query string remains
  available as `req.query` for handlers that need the verbatim form.

## [0.8.0] - 2026-04-07

### Added

- **Ory stack stdlib modules** — full Lua SDK for the Ory identity/authorization stack:
  - **`assay.kratos`** — Identity management. Login/registration/recovery/settings flows,
    identity CRUD via admin API, session introspection (`whoami`), schema management.
  - **`assay.hydra`** — OAuth2 and OpenID Connect. Client CRUD, authorize URL builder,
    token exchange (authorization_code grant), accept/reject login and consent challenges,
    token introspection, JWK endpoint.
  - **`assay.keto`** — Relationship-based access control. Relation-tuple CRUD, permission
    checks (Zanzibar-style), role/group membership queries, expand API for role inheritance.
  - **`assay.ory`** — Convenience wrapper that re-exports all three modules, with
    `ory.connect(opts)` to build all three clients from one options table.

  Pure Lua wrappers over the Ory REST APIs. Zero new Rust dependencies — binary size
  unchanged. Each module follows the standard `M.client(url, opts)` pattern with
  comprehensive `@quickref` metadata for `assay context` discovery.

- **Multi-value response headers in `http.serve`**: Header values can now be a Lua
  array of strings, emitting the same header name multiple times. Required for
  `Set-Cookie` when setting multiple cookies in one response, and for other headers
  that legitimately repeat (e.g., `Link`, `Vary`, `Cache-Control`).

  ```lua
  return {
    status = 200,
    headers = {
      ["Set-Cookie"] = {
        "session=abc; Path=/",
        "csrf=xyz; Path=/",
      },
    },
  }
  ```

  String values continue to work as before.

### Theme

This is the **identity and auth stack** release. Assay now ships with a complete SDK
for building OIDC-integrated apps on Ory: one app can handle Hydra login/consent
challenges, query Keto permissions, and manage Kratos identities — all in idiomatic
Lua with zero external dependencies beyond the existing assay binary.

## [0.7.2] - 2026-04-07

### Added

- **`req.params` in `http.serve`**: Query string parameters are now automatically parsed
  into a `params` table on incoming requests. For example, `?login_challenge=abc&foo=bar`
  becomes `req.params.login_challenge == "abc"` and `req.params.foo == "bar"`. The raw
  query string remains available as `req.query`.

## [0.7.1] - 2026-04-06

### Changed

- **Temporal included by default**: The `temporal` feature is now part of the default build.
  The standard Docker image and binary include native gRPC workflow support out of the box.
- **CI/Release/Docker**: Added `protoc` installation to all build environments for gRPC
  proto compilation.

## [0.7.0] - 2026-04-06

### Added

- **Temporal gRPC client** (optional `temporal` feature): Native gRPC bridge for Temporal workflow
  engine via `temporalio-client` v0.2.0. The `temporal` global provides `connect()` for persistent
  clients and `start()` for one-shot workflow execution. Client methods: `start_workflow`,
  `signal_workflow`, `query_workflow`, `describe_workflow`, `get_result`, `cancel_workflow`,
  `terminate_workflow`. All methods are async and use JSON payload encoding. Build with
  `cargo build --features temporal` — requires `protoc` (install via `mise install protoc`).
- **8 new tests** for temporal gRPC registration, error handling, and stdlib compatibility.

### Dependencies (temporal feature only)

- `temporalio-client` 0.2.0
- `temporalio-sdk` 0.2.0
- `temporalio-common` 0.2.0
- `url` 2.x

## [0.6.1] - 2026-04-06

### Fixed

- **http.serve async handlers**: Route handlers are now async (`call_async`), allowing
  them to call `http.get`, `sleep`, and any other async builtins. Previously, calling
  an async function from a route handler would crash with "attempt to yield from outside
  a coroutine". This was the only remaining sync call site for user Lua functions.

### Added

- **`npx skills add developerinlondon/assay`** — install Assay's SKILL.md into your
  AI agent project via the skills CLI.
- **Dark/light theme toggle** on assay.rs with localStorage persistence.
- **Version stamp in site footer** — shows git tag or SHA from deploy pipeline.
- **Infrastructure Testing** highlighted as core capability on the homepage.

### Changed

- **Site overhaul** — compact hero, service grid above the fold with SVG icons,
  side-by-side size & speed comparison charts, consistent nav across all pages,
  accurate module coverage (removed misleading "Coming Soon" features).
- **Comparison page** — renamed from "MCP Comparison", removed out-of-scope entries,
  shows only domains Assay actually covers.
- **README** — full size & speed comparison table with all 10 runtimes and cold start times.

## [0.6.0] - 2026-04-05

### Added

- **6 new stdlib modules** (23 -> 29 total):
  - **assay.openclaw** — OpenClaw AI agent platform integration. Invoke tools, send messages,
    manage persistent state with JSON files, diff detection, approval gates, cron jobs, sub-agent
    spawning, and LLM task execution. Auto-discovers `$OPENCLAW_URL`/`$CLAWD_URL`.
  - **assay.github** — GitHub REST API client (no `gh` CLI dependency). Pull requests (view, list,
    reviews, merge), issues (list, get, create, comment), repositories, Actions workflow runs, and
    GraphQL queries. Bearer token auth via `$GITHUB_TOKEN`.
  - **assay.gmail** — Gmail REST API client with OAuth2 token auto-refresh. Search, read, reply,
    send emails, and list labels. Uses Google OAuth2 credentials and token files.
  - **assay.gcal** — Google Calendar REST API client with OAuth2 token auto-refresh. Events CRUD
    (list, get, create, update, delete) and calendar list. Same auth pattern as gmail.
  - **assay.oauth2** — Google OAuth2 token management. File-based credentials loading, automatic
    access token refresh via refresh_token grant, token persistence, and auth header generation.
    Used internally by gmail and gcal modules. Default paths: `~/.config/gog/credentials.json`
    and `~/.config/gog/token.json`.
  - **assay.email_triage** — Email classification and triage. Deterministic rule-based
    categorization of emails into needs_reply, needs_action, and fyi buckets. Optional
    LLM-assisted triage via OpenClaw for smarter classification. Subject and sender pattern
    matching for automated mail detection.
- **Tool mode**: `assay run --mode tool` for OpenClaw integration. Runs Lua scripts as
  deterministic tools invoked by AI agents, with structured JSON output.
- **Resume mechanism**: `assay resume --token <token> --approve yes|no` for resuming paused
  workflows after human approval gates.
- **OpenClaw extension**: `@developerinlondon/assay-openclaw-extension` package (GitHub Packages).
  Registers Assay as an OpenClaw agent tool with configurable script directory, timeout, output
  size limits, and approval-based resume flow.
  Install via `openclaw plugins install @developerinlondon/assay-openclaw-extension`.

### Architecture

- **Shell-free design**: All 6 new modules use native HTTP APIs exclusively. No shell commands,
  no CLI dependencies (no `gh`, no `gcloud`, no `oauth2l`). Pure Lua over Assay HTTP builtins.

## [0.5.6] - 2026-04-03

### Added

- **SSE streaming** for `http.serve` via `{ sse = function(send) ... end }` return shape. SSE
  handler runs async so `sleep()` and other async builtins work inside the producer. `send` callback
  uses async channel send with proper backpressure handling. Custom headers take precedence over SSE
  defaults (Content-Type, Cache-Control, Connection).
- **assert.ne(a, b, msg?)** — inequality assertion for the test framework.

### Fixed

- **Content-Type precedence**: User-provided `Content-Type` header no longer overwritten by defaults
  (`text/plain` / `application/json`) in `http.serve` responses.
- **SSE newline validation**: `event` and `id` fields reject values containing newlines or carriage
  returns to prevent SSE field injection.

## [0.5.5] - 2026-03-13

### Added

- **follow_redirects** option for YAML HTTP checks. Set `follow_redirects: false` to disable
  automatic redirect following, allowing verification of auth-protected endpoints that return 302
  redirects to identity providers. Defaults to `true` for backward compatibility.
- **follow_redirects** option for Lua `http.client()` builder. Create clients with
  `http.client({ follow_redirects = false })` for the same no-redirect behavior in scripts.

## [0.5.4] - 2026-03-12

### Fixed

- **unleash.ensure_token**: Send `tokenName` instead of `username` in create token API payload. The
  Unleash API expects `tokenName` — sending `username` caused HTTP 400 (BadDataError). Function now
  accepts both `opts.tokenName` and `opts.username` for backward compatibility. Existing token
  matching also checks `t.tokenName` with fallback to `t.username`.

## [0.5.3] - 2026-03-12

### Added

- **disk builtins**: `disk.usage(path)` and `disk.mounts()` for filesystem disk information
- **os builtins**: `os.info()` returning name, version, arch, hostname, uptime
- **Expanded fs builtins**: `fs.exists`, `fs.is_dir`, `fs.is_file`, `fs.list`, `fs.mkdir`,
  `fs.remove`, `fs.rename`, `fs.copy`, `fs.stat`, `fs.glob`, `fs.temp_dir`
- **Expanded env builtins**: `env.set`, `env.unset`, `env.list`, `env.home`, `env.cwd`

### Fixed

- Cross-platform casts in `disk.rs` (`u32` on macOS, `u64` on Linux)

## [0.5.2] - 2026-03-11

### Added

- **shell builtins**: `shell.run(cmd)`, `shell.output(cmd)`, `shell.which(name)`, `shell.pipe(cmds)`
- **process builtins**: `process.spawn(cmd, opts)`, `process.kill(pid)`, `process.pid()`,
  `process.list()`, `process.sleep(secs)`
- **Expanded fs builtins**: `fs.read_bytes`, `fs.write_bytes`, `fs.append`, `fs.symlink`,
  `fs.readlink`, `fs.canonicalize`, `fs.metadata`

### Fixed

- `http.serve` port race condition — use ephemeral ports with `_SERVER_PORT` global
- Symlink safety, timeout validation, pipe drain, PID validation hardening

## [0.5.1] - 2026-02-23

### Added

- **Website**: Static site at assay.rs on Cloudflare Pages with homepage, module reference, AI agent
  integration guides, and MCP comparison page mapping 42 servers
- **llms.txt**: LLM agent context traversal files (`llms.txt` and `llms-full.txt`)
- **Enriched search keywords**: All 23 stdlib modules and builtins enriched with `@keywords`
  metadata for improved discovery

### Changed

- Updated README with website links
- Updated SKILL.md with MCP comparison and agent integration guidance

## [0.5.0] - 2026-02-23

### Added

- **CLI subcommands**: `assay exec` for inline Lua execution, `assay context` for prompt-ready
  module output, `assay modules` for listing all available modules
- **Module discovery**: LDoc metadata parser with auto-function extraction from all 23 stdlib
  modules
- **Search engine**: Zero-dependency BM25 search with FTS5 backend for `db` feature
- **Filesystem module loader**: Project/global/builtin priority for `require()` resolution
- **LDoc metadata headers**: All 23 stdlib modules annotated with `@module`, `@description`,
  `@keywords`, `@quickref`

### Changed

- CLI restructured to clap subcommands with backward compatibility
- Feature flags added for optional `db`, `server`, and `cli` dependencies

## [0.4.4] - 2026-02-20

### Added

- **Unleash stdlib module** (`assay.unleash`): Feature flag management client for Unleash. Projects
  (CRUD, list), environments (enable/disable per project), features (CRUD, archive, toggle on/off),
  strategies (list, add), API tokens (CRUD). Idempotent helpers: `ensure_project`,
  `ensure_environment`, `ensure_token`.

## [0.4.3] - 2026-02-13

### Added

- **crypto.hmac**: HMAC builtin supporting all 8 hash algorithms (SHA-224/256/384/512,
  SHA3-224/256/384/512). Binary-safe key/data via `mlua::String`. Supports `raw` output mode for key
  chaining (required by AWS Sig V4). Manual RFC 2104 implementation using existing sha2/sha3 crates
  — zero new dependencies.
- **S3 stdlib module** (`assay.s3`): Pure Lua S3 client with AWS Signature V4 request signing. Works
  with any S3-compatible endpoint (AWS, iDrive e2, Cloudflare R2, MinIO). Operations: create/delete
  bucket, list buckets, put/get/delete/list/head/copy objects, bucket_exists. Path-style URLs
  default. Epoch-to-UTC date math (no os.date dependency). Simple XML response parsing via Lua
  patterns.
- 15 new tests (7 HMAC + 8 S3 stdlib)

### Changed

- **Modular builtins**: Split monolithic `builtins.rs` (1788 lines) into `src/lua/builtins/`
  directory with 10 focused modules: http, json, serialization, assert, crypto, db, ws, template,
  core, mod. Zero behavior change — pure refactoring for maintainability.

## [0.4.2] - 2026-02-13

### Fixed

- **zitadel.find_app**: Improved with name query filter and resilient 409 conflict handling

## [0.4.1] - 2026-02-13

### Fixed

- **zitadel.create_oidc_app**: Handle 409 conflict responses gracefully

## [0.4.0] - 2026-02-13

### Added

- **Zitadel stdlib module** (`assay.zitadel`): OIDC identity management with JWT machine auth
- **Postgres stdlib module** (`assay.postgres`): Postgres-specific helpers
- **Vault enhancements**: Additional vault helper functions
- **healthcheck.wait**: Wait helper for health check polling

### Fixed

- Use merge-patch content-type in `k8s.patch`

## [0.3.3] - 2026-02-12

### Added

- **Filesystem require fallback**: External Lua libraries can be loaded via filesystem `require()`

### Fixed

- Load K8s CA cert for in-cluster HTTPS API calls

## [0.3.2] - 2026-02-11

### Added

- **crypto.jwt_sign**: `kid` (Key ID) header support for JWT signing

### Fixed

- Release workflow: Filter artifact download to exclude Docker metadata

## [0.3.1] - 2026-02-11

- Publish crate as `assay-lua` on crates.io (binary still installs as `assay`)
- Add release pipeline: pre-built binaries (Linux x86_64 static, macOS Apple Silicon), Docker,
  crates.io
- Add prerequisite docs to K8s-dependent examples
- Fix flaky sleep timing test

## [0.3.0] - 2026-02-11

First feature-complete release. Assay is now a general-purpose Lua runtime for Kubernetes — covering
verification, scripting, automation, and lightweight web services in a single ~9 MB binary.

### Added

- **Direct Lua execution**: `assay script.lua` with auto-detection by file extension
- **Shebang support**: `#!/usr/bin/assay` for executable Lua scripts
- **HTTP server**: `http.serve(port, routes)` — Lua scripts become web services
- **Database access**: `db.connect/query/execute` — PostgreSQL, MySQL/MariaDB, SQLite via sqlx
- **WebSocket client**: `ws.connect/send/recv/close` via tokio-tungstenite
- **Template engine**: `template.render/render_string` via minijinja (Jinja2-compatible)
- **Filesystem write**: `fs.write(path, content)` complements existing `fs.read`
- **YAML builtins**: `yaml.parse/encode` for YAML processing in Lua scripts
- **TOML builtins**: `toml.parse/encode` for TOML processing in Lua scripts
- **Async primitives**: `async.spawn(fn)` and `async.spawn_interval(ms, fn)` with handles
- **Crypto hash**: `crypto.hash(algo, data)` — SHA-256, SHA-384, SHA-512, SHA3-256, SHA3-512
- **Crypto random**: `crypto.random(length)` — cryptographically secure random hex strings
- **JWT signing**: `crypto.jwt_sign(claims, key, algo)` — RS256/RS384/RS512
- **Regex**: `regex.match/find/find_all/replace` via regex-lite
- **Base64**: `base64.encode/decode`
- **19 stdlib modules**: prometheus, alertmanager, loki, grafana, k8s, argocd, kargo, flux, traefik,
  vault, openbao, certmanager, eso, dex, crossplane, velero, temporal, harbor, healthcheck
- **E2E dogfood tests**: Assay testing itself via YAML check mode
- **CI**: GitHub Actions with clippy + tests on Linux (x86_64) and macOS (Apple Silicon)
- **491 tests**, 0 clippy warnings

### Changed

- CLI changed from `assay --config file.yaml` to `assay <file>` (positional arg, auto-detect)
- Lua upgraded from 5.4 to 5.5 (global declarations, incremental major GC, compact arrays)
- HTTP builtins DRYed (collapsed 4x duplicated method registrations into generic loop)

## [0.0.1] - 2026-02-09

Initial release. YAML-based check orchestration for ArgoCD PostSync verification.

### Added

- YAML config with timeout, retries, backoff, parallel execution
- Check types: `type: http`, `type: prometheus`, `type: script` (Lua)
- Built-in retry with exponential backoff
- Structured JSON output with pass/fail per check
- K8s-native exit codes (0 = all passed, 1 = any failed)
- HTTP client builtins: `http.get/post/put/patch`
- JSON builtins: `json.parse/encode`
- Assert builtins: `assert.eq/gt/lt/contains/not_nil/matches`
- Logging builtins: `log.info/warn/error`
- Environment: `env.get`, `sleep`, `time`
- Prometheus stdlib module
- Docker image: Alpine 3.21 + ~5 MB binary
