feat: 實作管理端指令群 jwks/accounts/audit-logs（issue #12）

- docs/commands.md 新增 §3.8 jwks、§3.9 accounts、§3.10 audit-logs 規格
- Api 新增 jwks/accounts/audit-logs 端點（共用 api_request）
- 新增 Jwks/Accounts/AuditLogs/Admin 模組；CLI 接線三個指令群
- 403 → 退出碼 8 提示需 admin；一次性密碼只在成功當下輸出
- 測試 100 例全綠（fake API 注入，比照 cli_test.exs）；基於含 PR #15 的最新 main

lib/bear_cli/api.ex

@@ -6,6 +6,8 @@ defmodule BearCli.Api do
   - App 管理 API `/api/v1/apps`（alterminal/bear#28；PAT Bearer、admin 限定）。
   - 個人自助 API `/api/v1/profile*`（alterminal/bear#35；PAT Bearer、
     任何有效帳號）：profile／密碼／email／sessions／PAT／MFA。
+  - 管理端 API `/api/v1/jwks`/`/api/v1/accounts`/`/api/v1/audit-logs`
+    (alterminal/bear#36; PAT Bearer, admin only).
   """
 
   @finch BearCli.Finch
@@ -265,4 +267,85 @@ defmodule BearCli.Api do
         {:error, :network, Exception.message(exception)}
     end
   end
+
+  @doc "`GET /api/v1/jwks`: list all keys (active and inactive), newest first (no pagination)."
+  def jwks_list(issuer, token) do
+    api_request(issuer, token, :get, "/api/v1/jwks")
+  end
+
+  @doc """
+  `POST /api/v1/jwks`: create a new signing key. attrs: `%{"kid" => "...", "alg" => "RS256"}`
+  (`alg` optional; RS256/384/512, ES256/384/512). Key material is never serialized.
+  """
+  def jwks_create(issuer, token, attrs) do
+    api_request(issuer, token, :post, "/api/v1/jwks", json: attrs)
+  end
+
+  @doc "`GET /api/v1/jwks/{id}`: single key (public metadata only)."
+  def jwks_get(issuer, token, id) do
+    api_request(issuer, token, :get, "/api/v1/jwks/" <> URI.encode(id))
+  end
+
+  @doc "`POST /api/v1/jwks/{id}/toggle`: switch key between active and inactive."
+  def jwks_toggle(issuer, token, id) do
+    api_request(issuer, token, :post, "/api/v1/jwks/" <> URI.encode(id) <> "/toggle", json: %{})
+  end
+
+  # -- Accounts API (alterminal/bear#46; PAT Bearer, admin only) --
+
+  @doc """
+  `GET /api/v1/accounts`: paginated list (newest first; per_page max 100).
+  Returns `{:ok, %{"data" => [accounts], "page" => n, "per_page" => n, "total" => n}}`.
+  """
+  def accounts_list(issuer, token, params \\ []) do
+    api_request(issuer, token, :get, "/api/v1/accounts", params: params)
+  end
+
+  @doc """
+  `POST /api/v1/accounts`: create an account directly (no email verification).
+  attrs: `%{"email" => "...", "hash_password" => "<plaintext>", "role" => "user|admin"}`
+  (`role` optional, default `user`).
+  """
+  def accounts_create(issuer, token, attrs) do
+    api_request(issuer, token, :post, "/api/v1/accounts", json: attrs)
+  end
+
+  @doc "`GET /api/v1/accounts/{id}`: single account (no credential fields)."
+  def accounts_get(issuer, token, id) do
+    api_request(issuer, token, :get, "/api/v1/accounts/" <> URI.encode(id))
+  end
+
+  @doc """
+  `PUT /api/v1/accounts/{id}`: update role; attrs: `%{"role" => "user|admin"}`.
+  """
+  def accounts_update_role(issuer, token, id, attrs) do
+    api_request(issuer, token, :put, "/api/v1/accounts/" <> URI.encode(id), json: attrs)
+  end
+
+  @doc """
+  `PUT /api/v1/accounts/{id}/password`: admin sets a new password (no old password
+  needed); attrs: `%{"hash_password" => "<plaintext>"}`.
+  """
+  def accounts_set_password(issuer, token, id, attrs) do
+    api_request(issuer, token, :put, "/api/v1/accounts/" <> URI.encode(id) <> "/password",
+      json: attrs
+    )
+  end
+
+  @doc "`DELETE /api/v1/accounts/{id}`: hard-delete an account (admin path). Returns `{:ok, %{}}` (204 empty)."
+  def accounts_delete(issuer, token, id) do
+    api_request(issuer, token, :delete, "/api/v1/accounts/" <> URI.encode(id))
+  end
+
+  # -- Audit logs API (alterminal/bear#46; PAT Bearer, admin only) --
+
+  @doc """
+  `GET /api/v1/audit-logs`: paginated list (newest first). params: `page:` /
+  `per_page:` (max 200) / `category:` filter. Returns `{:ok, %{"data" => [entries],
+  "page" => n, "per_page" => n, "total" => n, "total_pages" => n,
+  "emails" => %{id => email}}}`.
+  """
+  def audit_logs_list(issuer, token, params \\ []) do
+    api_request(issuer, token, :get, "/api/v1/audit-logs", params: params)
+  end
 end