Add incidents and scheduled maintenance

AGENTS.md

@@ -37,3 +37,19 @@ RAILS_ENV=test bin/rails app:db:migrate     # one-time, after adding a migration
 After this, `schema.rb` is updated and subsequent runs of
 `db:schema:load` will pick up the new tables. Commit `schema.rb`
 alongside the migration file.
+
+### Troubleshooting `ActiveRecord::DatabaseAlreadyExists`
+
+If `bin/rails test` (or `db:test:prepare`) fails with
+`ActiveRecord::DatabaseAlreadyExists` in `SQLiteDatabaseTasks#purge`, there
+are stray sqlite files in the **engine-root** `storage/`. The dummy's
+databases live in `test/dummy/storage/`; `purge` drops the file relative to
+the app root but then `create` checks `File.exist?` relative to the current
+directory, so a leftover `storage/*.sqlite3` in the engine root makes it
+think the database already exists. This happens after running a db task from
+the wrong place. Clear the strays and reset:
+
+```bash
+rm -f storage/*.sqlite3*
+RAILS_ENV=test bin/rails db:drop db:create db:schema:load
+```

Gemfile.lock

@@ -6,6 +6,7 @@ PATH
       frozen_record
       geared_pagination
       importmap-rails
+      local_time
       mission_control-jobs
       omniauth
       omniauth-rails_csrf_protection
@@ -189,6 +190,7 @@ GEM
       faraday-follow_redirects
     language_server-protocol (3.17.0.5)
     lint_roller (1.1.0)
+    local_time (3.0.3)
     logger (1.7.0)
     loofah (2.25.1)
       crass (~> 1.0.2)
@@ -688,6 +690,7 @@ CHECKSUMS
   json-jwt (1.17.0) sha256=6ff99026b4c54281a9431179f76ceb81faa14772d710ef6169785199caadc4cc
   language_server-protocol (3.17.0.5) sha256=fd1e39a51a28bf3eec959379985a72e296e9f9acfce46f6a79d31ca8760803cc
   lint_roller (1.1.0) sha256=2c0c845b632a7d172cb849cc90c1bce937a28c5c8ccccb50dfd46a485003cc87
+  local_time (3.0.3) sha256=c69a8974d993fdf6e60db02977ed23c070f203dcb3a1ff0de52ad3d2393f8303
   logger (1.7.0) sha256=196edec7cc44b66cfb40f9755ce11b392f21f7967696af15d274dde7edff0203
   loofah (2.25.1) sha256=d436c73dbd0c1147b16c4a41db097942d217303e1f7728704b37e4df9f6d2e04
   mail (2.9.0) sha256=6fa6673ecd71c60c2d996260f9ee3dd387d4673b8169b502134659ece6d34941

app/assets/stylesheets/upright/flash.css

@@ -0,0 +1,19 @@
+@layer components {
+  .flash {
+    border-radius: 0.5rem;
+    color: var(--color-ink);
+    font-size: var(--text-small);
+    margin-block-end: var(--block-space);
+    padding: 0.75rem 1rem;
+  }
+
+  .flash--notice {
+    background: color-mix(in oklab, var(--color-positive) 12%, var(--color-canvas));
+    border: 1px solid color-mix(in oklab, var(--color-positive) 40%, var(--color-canvas));
+  }
+
+  .flash--alert {
+    background: color-mix(in oklab, var(--color-negative) 12%, var(--color-canvas));
+    border: 1px solid color-mix(in oklab, var(--color-negative) 40%, var(--color-canvas));
+  }
+}