feat(cli): add project update - post a status update to a project

New in this port - Ruby has no equivalent, not even at the API-wrapper
level. Linear has its own "Project Update" feature (a journal-style
status post on a project, distinct from editing the project's own
fields) via the projectUpdateCreate mutation. Adds a new ProjectUpdate
resource (mirrors Comment's shape) and `lc project update <PROJECT>
--body "..." [--health onTrack|atRisk|offTrack]`, resolving PROJECT
the same way issue list's --project does.

Closes #42.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Author: bougyman

Readme.adoc

@@ -226,6 +226,16 @@ $ lcomment CRY-1234 CRY-3 <5>
 $ lc issue update --close --reason "These were closable" CRY-1234 CRY-2
 ----
 
+==== Post a project status update
+
+Not in Ruby's `linear-cli` - a status post on a project (Linear's own "Project
+Update" feature), not an edit to the project itself.
+
+[source,sh]
+----
+$ lc project update Manhattan --body "Shipping ahead of schedule" --health onTrack
+----
+
 === Wrapper scripts
 
 The `bin/` wrapper scripts (ported verbatim from `linear-cli`'s own `exe/scripts/`)

app/lib/linear_cli/cli.ex

@@ -162,6 +162,10 @@ defmodule LinearCli.CLI do
   defp dispatch([:version], result, halt), do: run(&Commands.version/1, result, halt)
   defp dispatch([:team, :list], result, halt), do: run(&Commands.team_list/1, result, halt)
   defp dispatch([:project, :list], result, halt), do: run(&Commands.project_list/1, result, halt)
+
+  defp dispatch([:project, :update], result, halt),
+    do: run(&Commands.project_update/1, result, halt)
+
   defp dispatch([:issue, :list], result, halt), do: run(&Commands.issue_list/1, result, halt)
   defp dispatch([:issue, :create], result, halt), do: run(&Commands.issue_create/1, result, halt)
 
@@ -345,6 +349,28 @@ defmodule LinearCli.CLI do
               options: [
                 team: [short: "-t", long: "--team", help: "Show projects for only this team"]
               ]
+            ],
+            update: [
+              name: "update",
+              about: "Post a status update to a project",
+              args: [
+                project: [
+                  value_name: "PROJECT",
+                  help: "Project name, URL, ID, or search term",
+                  required: true
+                ]
+              ],
+              options: [
+                body: [short: "-b", long: "--body", help: "The update's content (markdown)"],
+                health: [
+                  long: "--health",
+                  help: "Project health: onTrack, atRisk, or offTrack",
+                  parser: fn
+                    v when v in ["onTrack", "atRisk", "offTrack"] -> {:ok, v}
+                    v -> {:error, "must be one of: onTrack, atRisk, offTrack (got #{inspect(v)})"}
+                  end
+                ]
+              ]
             ]
           ]
         ],

app/lib/linear_cli/cli/commands.ex

@@ -59,6 +59,26 @@ defmodule LinearCli.CLI.Commands do
   defp projects_for(%{mine: true}, _options), do: Linear.my_projects()
   defp projects_for(_flags, _options), do: Linear.projects()
 
+  @doc """
+  New in this port - Ruby has no equivalent. Posts a status update
+  (Linear's own "Project Update" feature - a journal-style status post,
+  not an edit to the project's own fields) via the projectUpdateCreate
+  mutation. `PROJECT` is resolved the same way issue list's `--project`
+  is - against every project in the workspace, prompting if ambiguous.
+  """
+  def project_update(%{args: %{project: search}, options: options}) do
+    with {:ok, projects} <- Linear.projects(),
+         project when not is_nil(project) <- Projects.project_for(projects, search),
+         {:ok, update} <-
+           Linear.post_project_update(project.id, options.body, %{health: options.health}) do
+      Display.show(update, %{output: options.output})
+      :ok
+    else
+      nil -> {:error, {:smells_bad, "No project found matching #{search}"}}
+      {:error, reason} -> {:error, reason}
+    end
+  end
+
   @doc """
   Ported from commands/issue/list.rb + operations/issue/list.rb.
 

app/lib/linear_cli/cli/display.ex

@@ -7,7 +7,7 @@ defmodule LinearCli.CLI.Display do
   own `#to_s`/`#full`/`#display` methods.
   """
 
-  alias LinearCli.Linear.{Issue, Project, Team, User}
+  alias LinearCli.Linear.{Issue, Project, ProjectUpdate, Team, User}
 
   @ash_internal_fields ~w(__meta__ __metadata__ __order__ __lateral_join_source__ aggregates calculations)a
 
@@ -31,6 +31,11 @@ defmodule LinearCli.CLI.Display do
     IO.puts("#{String.pad_trailing(project.name || "", 12)} #{project.url}")
   end
 
+  defp puts_text(%ProjectUpdate{} = update, _opts) do
+    health = if update.health, do: " (#{update.health})", else: ""
+    IO.puts("Posted#{health}: #{update.url}")
+  end
+
   defp puts_text(%User{} = user, opts) do
     IO.puts(user_line(user, opts))
   end

app/lib/linear_cli/linear.ex

@@ -49,5 +49,9 @@ defmodule LinearCli.Linear do
     resource LinearCli.Linear.Comment do
       define :add_comment, action: :create, args: [:issue_identifier, :body]
     end
+
+    resource LinearCli.Linear.ProjectUpdate do
+      define :post_project_update, action: :create, args: [:project_id, :body]
+    end
   end
 end

app/lib/linear_cli/linear/project_update.ex

@@ -0,0 +1,79 @@
+defmodule LinearCli.Linear.ProjectUpdate do
+  @moduledoc """
+  A Linear project update - a status post on a project (e.g. "This week's
+  progress..."), distinct from editing the project's own fields. New in
+  this port - Ruby has no equivalent. Created via the projectUpdateCreate
+  mutation (schema/LinearAPI.graphql).
+  """
+
+  use Ash.Resource, domain: LinearCli.Linear
+
+  actions do
+    create :create do
+      argument :project_id, :string, allow_nil?: false
+      argument :body, :string, allow_nil?: false
+      argument :health, :string, allow_nil?: true
+      manual LinearCli.Linear.ProjectUpdate.Create
+    end
+  end
+
+  attributes do
+    attribute :id, :string, primary_key?: true, allow_nil?: false, public?: true
+    attribute :body, :string, public?: true
+    attribute :health, :string, public?: true
+    attribute :url, :string, public?: true
+  end
+
+  @doc "GraphQL field selection for a project update's own fields."
+  def base_fields do
+    "id body health url createdAt"
+  end
+
+  @doc false
+  def from_map(map) do
+    struct!(__MODULE__,
+      id: map["id"],
+      body: map["body"],
+      health: map["health"],
+      url: map["url"]
+    )
+  end
+end
+
+defmodule LinearCli.Linear.ProjectUpdate.Create do
+  @moduledoc false
+  use Ash.Resource.ManualCreate
+
+  alias LinearCli.Api
+  alias LinearCli.Linear.ProjectUpdate
+
+  def create(changeset, _opts, _context) do
+    args = changeset.arguments
+
+    input =
+      %{"projectId" => args.project_id, "body" => args.body}
+      |> maybe_put_health(args.health)
+
+    case Api.call(document(), %{"input" => input}) do
+      {:ok, %{"projectUpdateCreate" => %{"projectUpdate" => update_map}}}
+      when is_map(update_map) ->
+        {:ok, ProjectUpdate.from_map(update_map)}
+
+      {:ok, other} ->
+        {:error, {:unexpected_response, other}}
+
+      {:error, reason} ->
+        {:error, reason}
+    end
+  end
+
+  defp maybe_put_health(input, nil), do: input
+  defp maybe_put_health(input, health), do: Map.put(input, "health", health)
+
+  # A function, not a module attribute: ProjectUpdate.base_fields/0 reaches
+  # into no other file today, but kept consistent with every other
+  # document/0 in this codebase for the same reason they all are.
+  defp document do
+    "mutation($input: ProjectUpdateCreateInput!) { projectUpdateCreate(input: $input) { projectUpdate { #{ProjectUpdate.base_fields()} } } }"
+  end
+end

app/test/linear_cli/cli_test.exs

@@ -106,6 +106,77 @@ defmodule LinearCli.CLITest do
     assert capture_io(fn -> LinearCli.CLI.main(["project", "list"]) end) =~ "Manhattan"
   end
 
+  test "project update resolves the project by name and posts a status update" do
+    test_pid = self()
+
+    Req.Test.stub(LinearCli.Api, fn conn ->
+      {:ok, body, conn} = Plug.Conn.read_body(conn)
+      decoded = Jason.decode!(body)
+      query = decoded["query"]
+
+      cond do
+        String.contains?(query, "projects(first: $first") ->
+          Req.Test.json(conn, %{
+            "data" => %{
+              "projects" => %{
+                "edges" => [
+                  %{
+                    "node" => %{
+                      "id" => "p1",
+                      "name" => "Manhattan",
+                      "slugId" => "abc",
+                      "url" => "https://linear.app/x/project/manhattan-abc"
+                    },
+                    "cursor" => "p1"
+                  }
+                ],
+                "pageInfo" => %{"hasNextPage" => false}
+              }
+            }
+          })
+
+        String.contains?(query, "projectUpdateCreate") ->
+          send(test_pid, {:input, decoded["variables"]["input"]})
+
+          Req.Test.json(conn, %{
+            "data" => %{
+              "projectUpdateCreate" => %{
+                "projectUpdate" => %{
+                  "id" => "pu1",
+                  "body" => "Doing great",
+                  "health" => "onTrack",
+                  "url" => "https://linear.app/x/update/pu1"
+                }
+              }
+            }
+          })
+
+        true ->
+          raise "no stub matched query: #{query}"
+      end
+    end)
+
+    output =
+      capture_io(fn ->
+        assert :ok =
+                 LinearCli.CLI.main([
+                   "project",
+                   "update",
+                   "Manhattan",
+                   "--body",
+                   "Doing great",
+                   "--health",
+                   "onTrack"
+                 ])
+      end)
+
+    assert output =~ "onTrack"
+    assert output =~ "https://linear.app/x/update/pu1"
+
+    assert_received {:input,
+                     %{"projectId" => "p1", "body" => "Doing great", "health" => "onTrack"}}
+  end
+
   test "issue list prints a one-line summary per issue" do
     assert capture_io(fn -> LinearCli.CLI.main(["issue", "list"]) end) =~ "CRY-1"
   end
@@ -281,7 +352,7 @@ defmodule LinearCli.CLITest do
 
     assert_received {:halted, 1}
     assert output =~ "Manage projects"
-    assert output =~ "list        List projects"
+    assert output =~ "List projects"
   end
 
   test "an unexpected raise (not a returned error) still degrades to exit 88, not a raw crash" do