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diff --git a/Omni/Ci.hs b/Omni/Ci.hs
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+#!/usr/bin/env run.sh
+{-# LANGUAGE LambdaCase #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE QuasiQuotes #-}
+{-# LANGUAGE RecordWildCards #-}
+{-# LANGUAGE NoImplicitPrelude #-}
+
+-- | A robust CI program replacing Omni/Ci.sh
+--
+-- : out ci
+module Omni.Ci (main) where
+
+import Alpha
+import qualified Data.Text as Text
+import qualified Omni.Cli as Cli
+import qualified Omni.Log as Log
+import qualified Omni.Test as Test
+import qualified System.Directory as Dir
+import qualified System.Environment as Environment
+import qualified System.Exit as Exit
+import System.FilePath ((</>))
+import qualified System.Process as Process
+
+main :: IO ()
+main = Cli.main <| Cli.Plan help move test pure
+
+help :: Cli.Docopt
+help =
+  [Cli.docopt|
+omni-ci - Continuous Integration
+
+Usage:
+  ci test
+  ci [options]
+
+Options:
+  -h, --help  Print this info
+|]
+
+test :: Test.Tree
+test =
+  Test.group
+    "Omni.Ci"
+    [ Test.unit "placeholder test" <| do
+        True Test.@=? True
+    ]
+
+move :: Cli.Arguments -> IO ()
+move _ = do
+  -- 1. Check for dirty worktree
+  status <- readProcess "git" ["status", "-s"] ""
+  unless (Text.null status) <| do
+    Log.fail ["ci", "dirty worktree"]
+    Exit.exitWith (Exit.ExitFailure 1)
+
+  -- 2. Setup environment
+  -- We need to ensure timeout is disabled for CI builds
+  -- Equivalent to: BILD_ARGS="--time 0 ${BILD_ARGS:-""}"
+  currentBildArgs <- Environment.lookupEnv "BILD_ARGS"
+  let bildArgs = "--time 0 " <> fromMaybe "" currentBildArgs
+  Environment.setEnv "BILD_ARGS" bildArgs
+
+  -- 3. Get user info
+  at <- readProcess "date" ["-R"] "" |> fmap chomp
+  user <- readProcess "git" ["config", "--get", "user.name"] "" |> fmap chomp
+  mail <- readProcess "git" ["config", "--get", "user.email"] "" |> fmap chomp
+
+  -- 4. Check existing git notes
+  -- commit=$(git notes --ref=ci show HEAD || true)
+  (exitCode, noteContent, _) <- Process.readProcessWithExitCode "git" ["notes", "--ref=ci", "show", "HEAD"] ""
+
+  let alreadyGood = case exitCode of
+        Exit.ExitSuccess ->
+          let content = Text.pack noteContent
+           in ("Lint-is: good" `Text.isInfixOf` content) && ("Test-is: good" `Text.isInfixOf` content)
+        _ -> False
+
+  when alreadyGood <| do
+    Log.pass ["ci", "already verified"]
+    Exit.exitSuccess
+
+  -- 5. Run Lint
+  coderoot <- getCoderoot
+  let runlint = coderoot </> "_/bin/lint"
+
+  lintExists <- Dir.doesFileExist runlint
+  unless lintExists <| do
+    Log.info ["ci", "building lint"]
+    callProcess "bild" [coderoot </> "Omni/Lint.hs"]
+
+  Log.info ["ci", "running lint"]
+  -- if "$runlint" "${CODEROOT:?}"/**/*
+  -- We need to expand **/* which shell does.
+  -- Since we are in Haskell, we can just pass "." or call git ls-files or similar.
+  -- Omni/Ci.sh used "${CODEROOT:?}"/**/* which relies on bash globbing.
+  -- Omni/Lint.hs recursively checks if passed directory or uses git diff if no args.
+  -- But Omni/Ci.sh passes **/*.
+  -- Let's try passing the root directory or just run it without args?
+  -- Omni/Lint.hs says:
+  -- "case Cli.getAllArgs args (Cli.argument "file") of [] -> changedFiles ..."
+  -- So if we pass nothing, it only checks changed files.
+  -- The CI script explicitly passed everything.
+  -- We can replicate "everything" by passing the coderoot, assuming Lint handles directories recursively?
+  -- Omni/Lint.hs: "traverse Directory.makeAbsolute /> map (Namespace.fromPath root) ... filter (not <. Namespace.isCab)"
+  -- It seems it expects files.
+  -- We can use `git ls-files` to get all files.
+  allFiles <-
+    readProcess "git" ["ls-files"] ""
+      /> lines
+      /> map Text.unpack
+      /> filter (not <. null)
+
+  -- We can't pass all files as arguments if there are too many (ARG_MAX).
+  -- But wait, Omni/Lint.hs takes arguments.
+  -- If we want to check everything, maybe we should implement a "check all" mode in Lint or pass chunks.
+  -- However, looking at Omni/Ci.sh: `"$runlint" "${CODEROOT:?}"/**/*`
+  -- This globbing is handled by the shell. It might be huge.
+  -- If I run `lint` with `.` it might work if Lint supports directories.
+  -- Omni/Lint.hs: "files |> ... filterM Directory.doesFileExist"
+  -- It seems it filters for files.
+  -- If I pass a directory, `doesFileExist` will return False.
+  -- So I must pass files.
+
+  -- Let's pass all files from git ls-files.
+  -- But we must be careful about ARG_MAX.
+  -- For now, let's try passing them. If it fails, we might need to batch.
+
+  lintResult <- do
+    -- We run lint on all files.
+    -- Note: calling callProcess with huge list might fail.
+    -- Let's see if we can avoid passing all files if Lint supports it.
+    -- Omni/Lint.hs doesn't seem to support directory recursion on its own if passed a dir,
+    -- it treats args as file paths.
+
+    -- We will try to run it.
+    (exitCodeLint, _, _) <- Process.readProcessWithExitCode runlint allFiles ""
+    pure <| case exitCodeLint of
+      Exit.ExitSuccess -> "good"
+      _ -> "fail"
+
+  -- 6. Run Tests
+  -- if bild "${BILD_ARGS:-""}" --test "${CODEROOT:?}"/**/*
+  Log.info ["ci", "running tests"]
+
+  testResult <- do
+    -- similarly, bild takes targets.
+    -- bild "${CODEROOT:?}"/**/*
+    -- We can pass namespaces.
+    -- Let's try passing all files again.
+    -- bild handles namespaces.
+    (exitCodeTest, _, _) <- Process.readProcessWithExitCode "bild" ("--test" : allFiles) ""
+    pure <| case exitCodeTest of
+      Exit.ExitSuccess -> "good"
+      _ -> "fail"
+
+  -- 7. Create Note
+  let noteMsg =
+        Text.unlines
+          [ "Lint-is: " <> lintResult,
+            "Test-is: " <> testResult,
+            "Test-by: " <> user <> " <" <> mail <> ">",
+            "Test-at: " <> at
+          ]
+
+  -- 8. Append Note
+  callProcess "git" ["notes", "--ref=ci", "append", "-m", Text.unpack noteMsg]
+
+  -- 9. Exit
+  if lintResult == "good" && testResult == "good"
+    then Exit.exitSuccess
+    else do
+      Log.fail ["ci", "verification failed"]
+      Exit.exitWith (Exit.ExitFailure 1)
+
+-- Helpers
+
+readProcess :: FilePath -> [String] -> String -> IO Text
+readProcess cmd args input = do
+  out <- Process.readProcess cmd args input
+  pure (Text.pack out)
+
+callProcess :: FilePath -> [String] -> IO ()
+callProcess cmd args = do
+  Process.callProcess cmd args
+
+getCoderoot :: IO FilePath
+getCoderoot = do
+  mEnvRoot <- Environment.lookupEnv "CODEROOT"
+  case mEnvRoot of
+    Just envRoot -> pure envRoot
+    Nothing -> panic "CODEROOT not set" -- Simplified for now