Upgrade to TailwindCSS v4.0 + update gems

This commit should incorporate most (all?) of the updates needed to
switch us over to TailwindCSS v4. Huzzah!

Upgrade process (roughly), with much help from the upgrade guide and
tool from the tailwindcss-rails gem:
https://github.com/rails/tailwindcss-rails/blob/main/README.md#upgrading-your-application-from-tailwind-v3-to-v4

1. Specify `"~> 4.0.0.rc2"` on the `tailwindcss-rails` gem in Gemfile
2. Bundle update
3. `rails tailwindcss:upgrade`

Then: Look through everything after reading the tailwindcss upgrade
guide: https://tailwindcss.com/docs/upgrade-guide
- Convert the old tailwind.config.js to `@` directives in
  application.tailwind.css
- etc. (see commit contents)
- Check JS linters for issues

Remaining Issues:
- I'm seeing issues loading `/assets/tailwindcss`:
  In development:
  - 404 NOT FOUND: `GET http://localhost:3000/assets/tailwindcss`... not
    sure why and doesn't seem to affect anything.
  In production:
  - 404 NOT FOUND: `GET http://localhost:3000/assets/tailwindcss`
  - `The resource from “http://localhost:3000/assets/tailwindcss” was
     blocked due to MIME type (“text/html”) mismatch
     (X-Content-Type-Options: nosniff).`

Author: pdobb

.eslintrc.json

@@ -10,16 +10,5 @@
   },
   "globals": {
     "Turbo": "readonly"
-  },
-  "overrides": [
-    {
-      "files": ["config/tailwind.config.js"],
-      "env": {
-        "node": true
-      },
-      "rules": {
-        "no-unused-vars": ["error", { "varsIgnorePattern": "defaultTheme" }]
-      }
-    }
-  ]
+  }
 }

Gemfile

@@ -19,7 +19,7 @@ gem "turbo-rails"
 # Hotwire's modest JavaScript framework [https://stimulus.hotwired.dev]
 gem "stimulus-rails"
 # Use Tailwind CSS [https://github.com/rails/tailwindcss-rails]
-gem "tailwindcss-rails"
+gem "tailwindcss-rails", "~> 4.0.0.rc2"
 
 # Use Active Model has_secure_password [https://guides.rubyonrails.org/active_model_basics.html#securepassword]
 # gem "bcrypt", "~> 3.1.7"

Gemfile.lock

@@ -122,7 +122,7 @@ GEM
       dry-logic (>= 1.4, < 2)
       dry-types (>= 1.7, < 2)
       zeitwerk (~> 2.6)
-    dry-types (1.8.0)
+    dry-types (1.8.1)
       bigdecimal (~> 3.0)
       concurrent-ruby (~> 1.0)
       dry-core (~> 1.0)
@@ -154,7 +154,7 @@ GEM
     honeybadger (5.26.2)
       logger
       ostruct
-    i18n (1.14.6)
+    i18n (1.14.7)
       concurrent-ruby (~> 1.0)
     importmap-rails (2.1.0)
       actionpack (>= 6.0.0)
@@ -164,7 +164,8 @@ GEM
       activesupport (>= 3.0)
       nokogiri (>= 1.6)
     io-console (0.8.0)
-    irb (1.14.3)
+    irb (1.15.1)
+      pp (>= 0.6.0)
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
     json (2.9.1)
@@ -221,32 +222,32 @@ GEM
       net-protocol
     net-protocol (0.2.2)
       timeout
-    net-scp (4.0.0)
+    net-scp (4.1.0)
       net-ssh (>= 2.6.5, < 8.0.0)
     net-sftp (4.0.0)
       net-ssh (>= 5.0.0, < 8.0.0)
     net-smtp (0.5.0)
       net-protocol
     net-ssh (7.3.0)
     nio4r (2.7.4)
-    nokogiri (1.18.1)
+    nokogiri (1.18.2)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
-    nokogiri (1.18.1-aarch64-linux-gnu)
+    nokogiri (1.18.2-aarch64-linux-gnu)
       racc (~> 1.4)
-    nokogiri (1.18.1-aarch64-linux-musl)
+    nokogiri (1.18.2-aarch64-linux-musl)
       racc (~> 1.4)
-    nokogiri (1.18.1-arm-linux-gnu)
+    nokogiri (1.18.2-arm-linux-gnu)
       racc (~> 1.4)
-    nokogiri (1.18.1-arm-linux-musl)
+    nokogiri (1.18.2-arm-linux-musl)
       racc (~> 1.4)
-    nokogiri (1.18.1-arm64-darwin)
+    nokogiri (1.18.2-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.18.1-x86_64-darwin)
+    nokogiri (1.18.2-x86_64-darwin)
       racc (~> 1.4)
-    nokogiri (1.18.1-x86_64-linux-gnu)
+    nokogiri (1.18.2-x86_64-linux-gnu)
       racc (~> 1.4)
-    nokogiri (1.18.1-x86_64-linux-musl)
+    nokogiri (1.18.2-x86_64-linux-musl)
       racc (~> 1.4)
     object_identifier (0.10.0)
     object_inspector (0.8.2)
@@ -256,6 +257,9 @@ GEM
       ast (~> 2.4.1)
       racc
     pg (1.5.9)
+    pp (0.6.2)
+      prettyprint
+    prettyprint (0.2.0)
     propshaft (1.1.0)
       actionpack (>= 7.0.0)
       activesupport (>= 7.0.0)
@@ -321,7 +325,7 @@ GEM
     requestjs-rails (0.0.12)
       railties (>= 6.1.0)
     rexml (3.4.0)
-    rubocop (1.70.0)
+    rubocop (1.71.0)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
@@ -339,7 +343,7 @@ GEM
     rubocop-performance (1.23.1)
       rubocop (>= 1.48.1, < 2.0)
       rubocop-ast (>= 1.31.1, < 2.0)
-    rubocop-rails (2.29.0)
+    rubocop-rails (2.29.1)
       activesupport (>= 4.2.0)
       rack (>= 1.1)
       rubocop (>= 1.52.0, < 2.0)
@@ -354,7 +358,7 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.13.1)
     simplecov_json_formatter (0.1.4)
-    solid_cable (3.0.5)
+    solid_cable (3.0.7)
       actioncable (>= 7.2)
       activejob (>= 7.2)
       activerecord (>= 7.2)
@@ -381,15 +385,16 @@ GEM
     stimulus-rails (1.3.4)
       railties (>= 6.0.0)
     stringio (3.1.2)
-    tailwindcss-rails (3.2.0)
+    tailwindcss-rails (4.0.0.rc2)
       railties (>= 7.0.0)
-      tailwindcss-ruby
-    tailwindcss-ruby (3.4.17)
-    tailwindcss-ruby (3.4.17-aarch64-linux)
-    tailwindcss-ruby (3.4.17-arm-linux)
-    tailwindcss-ruby (3.4.17-arm64-darwin)
-    tailwindcss-ruby (3.4.17-x86_64-darwin)
-    tailwindcss-ruby (3.4.17-x86_64-linux)
+      tailwindcss-ruby (~> 4.0)
+    tailwindcss-ruby (4.0.0)
+    tailwindcss-ruby (4.0.0-aarch64-linux-gnu)
+    tailwindcss-ruby (4.0.0-aarch64-linux-musl)
+    tailwindcss-ruby (4.0.0-arm64-darwin)
+    tailwindcss-ruby (4.0.0-x86_64-darwin)
+    tailwindcss-ruby (4.0.0-x86_64-linux-gnu)
+    tailwindcss-ruby (4.0.0-x86_64-linux-musl)
     thor (1.3.2)
     thruster (0.1.10)
     thruster (0.1.10-aarch64-linux)
@@ -461,7 +466,7 @@ DEPENDENCIES
   solid_queue
   statusable
   stimulus-rails
-  tailwindcss-rails
+  tailwindcss-rails (~> 4.0.0.rc2)
   thruster
   turbo-rails
   tzinfo-data
@@ -504,19 +509,19 @@ CHECKSUMS
   dry-initializer (3.2.0) sha256=37d59798f912dc0a1efe14a4db4a9306989007b302dcd5f25d0a2a20c166c4e3
   dry-logic (1.6.0) sha256=da6fedbc0f90fc41f9b0cc7e6f05f5d529d1efaef6c8dcc8e0733f685745cea2
   dry-schema (1.13.4) sha256=caeb644de0be412d347eb4a6d91c56ceef8ec22cfceb98e80d03d354954b1d2a
-  dry-types (1.8.0) sha256=bdf444e0d2ff83f500271c7d38cb29690c2654fa78e588f68349a7b1e7341131
+  dry-types (1.8.1) sha256=3fe395835763c64fb76f1076b564d718e0c2519afbfddb8ab5609a4724d70a95
   ed25519 (1.3.0) sha256=514a5584f84d39daac568a17ec93a4e7261e140c52c562ed8c382c18456e627d
   erubi (1.13.1) sha256=a082103b0885dbc5ecf1172fede897f9ebdb745a4b97a5e8dc63953db1ee4ad9
   et-orbi (1.2.11) sha256=d26e868cc21db88280a9ec1a50aa3da5d267eb9b2037ba7b831d6c2731f5df64
   fugit (1.11.1) sha256=e89485e7be22226d8e9c6da411664d0660284b4b1c08cacb540f505907869868
   gemwork (0.7.5) sha256=8fd481df0a85a9f4e867c15feebdef7b7bb8ea819ff560e3894c356016288e4a
   globalid (1.2.1) sha256=70bf76711871f843dbba72beb8613229a49429d1866828476f9c9d6ccc327ce9
   honeybadger (5.26.2) sha256=231b3402964f004fc3ff9f8c51a643bed5c17636d6087032f4ca2a8508c2109b
-  i18n (1.14.6) sha256=dc229a74f5d181f09942dd60ab5d6e667f7392c4ee826f35096db36d1fe3614c
+  i18n (1.14.7) sha256=ceba573f8138ff2c0915427f1fc5bdf4aa3ab8ae88c8ce255eb3ecf0a11a5d0f
   importmap-rails (2.1.0) sha256=9f10c67d60651a547579f448100d033df311c5d5db578301374aeb774faae741
   inline_svg (1.10.0) sha256=5b652934236fd9f8adc61f3fd6e208b7ca3282698b19f28659971da84bf9a10f
   io-console (0.8.0) sha256=cd6a9facbc69871d69b2cb8b926fc6ea7ef06f06e505e81a64f14a470fddefa2
-  irb (1.14.3) sha256=c457f1f2f1438ae9ce5c5be3981ae2138dec7fb894c7d73777eeeb0a6c0d0752
+  irb (1.15.1) sha256=d9bca745ac4207a8b728a52b98b766ca909b86ff1a504bcde3d6f8c84faae890
   json (2.9.1) sha256=d2bdef4644052fad91c1785d48263756fe32fcac08b96a20bb15840e96550d11
   kamal (2.4.0) sha256=5f62f1858cc15c1506e55b60b075c89a1e7ef9c6bb0a7e3c01b54af190f85181
   language_server-protocol (3.17.0.3) sha256=3d5c58c02f44a20d972957a9febe386d7e7468ab3900ce6bd2b563dd910c6b3f
@@ -535,26 +540,28 @@ CHECKSUMS
   net-imap (0.5.5) sha256=abe6a8932c68269804b0f0b499a0d1972098e7e6b8b61a7c508b127ebde1682a
   net-pop (0.1.2) sha256=848b4e982013c15b2f0382792268763b748cce91c9e91e36b0f27ed26420dff3
   net-protocol (0.2.2) sha256=aa73e0cba6a125369de9837b8d8ef82a61849360eba0521900e2c3713aa162a8
-  net-scp (4.0.0) sha256=b32ded0d48c88ce70844a063e4e14efb44a95e51a9e0c0bfb0c54b4313b622ea
+  net-scp (4.1.0) sha256=a99b0b92a1e5d360b0de4ffbf2dc0c91531502d3d4f56c28b0139a7c093d1a5d
   net-sftp (4.0.0) sha256=65bb91c859c2f93b09826757af11b69af931a3a9155050f50d1b06d384526364
   net-smtp (0.5.0) sha256=5fc0415e6ea1cc0b3dfea7270438ec22b278ca8d524986a3ae4e5ae8d087b42a
   net-ssh (7.3.0) sha256=172076c4b30ce56fb25a03961b0c4da14e1246426401b0f89cba1a3b54bf3ef0
   nio4r (2.7.4) sha256=d95dee68e0bb251b8ff90ac3423a511e3b784124e5db7ff5f4813a220ae73ca9
-  nokogiri (1.18.1) sha256=df18be7e96c34736b6abfdeda80c6e845134fb9afe2fe5d4fbc1cf1f89c68475
-  nokogiri (1.18.1-aarch64-linux-gnu) sha256=35837013800e34342fcbaca305f8c49231f6bd4f779bfa23fe7b4686ae82d5b8
-  nokogiri (1.18.1-aarch64-linux-musl) sha256=1b303402cd045f9075a6ee291767c1ffe654b426ed30911e5b47819c21855b22
-  nokogiri (1.18.1-arm-linux-gnu) sha256=3b873fd6b0cd1ad7c77e87af701075bdfd14c9a6b2f2965c5e00ed29a5627a37
-  nokogiri (1.18.1-arm-linux-musl) sha256=d6fe26f6d1425f403077fbf829fc0ef8e521545c924a13777d6fdf1a0c07c1f3
-  nokogiri (1.18.1-arm64-darwin) sha256=d75193f284c899d225943a8944479faedd995a7573ddd5c8308ffbdf2ec55204
-  nokogiri (1.18.1-x86_64-darwin) sha256=d94e3aa6483577495fc8969d6b4b5c075840ce6b1ab09636a6d4177ad171051d
-  nokogiri (1.18.1-x86_64-linux-gnu) sha256=e516cf16ccde67ed4cc595a2621ca5ddd42562ecb24928914b0045a20a41620e
-  nokogiri (1.18.1-x86_64-linux-musl) sha256=f2c389bc100541247edaeaabc6d875b31d72e897471b66a67987b2e4df0192d6
+  nokogiri (1.18.2) sha256=93791cfb33186fe077eb9e1b8a6855b5621e328f81f565334572fa398366f8bf
+  nokogiri (1.18.2-aarch64-linux-gnu) sha256=74e0f9a7487a30a2957f46c5113d58f836436b033c9906e0bc6fee9d8cdafabf
+  nokogiri (1.18.2-aarch64-linux-musl) sha256=99bcea596a80eaee99f2bae2596275641ea688262c1da32b4e90db6159e86477
+  nokogiri (1.18.2-arm-linux-gnu) sha256=6fb0246b69f2c589a69254e82bc2a40aa238c4f977fd7903e283341a92935729
+  nokogiri (1.18.2-arm-linux-musl) sha256=dcdd4d10ed2743f0d8c887825700c3a8506aea1aa415917ac50ccc01597c51a3
+  nokogiri (1.18.2-arm64-darwin) sha256=8288ec7a296e2510ca9bd053c0c5989f11260f8c07bc3e9afbafa536f7077281
+  nokogiri (1.18.2-x86_64-darwin) sha256=7fca165e5ee87e9b6b3f1377180376afc0c8652ed2a3d761f472f0e3d3a1c651
+  nokogiri (1.18.2-x86_64-linux-gnu) sha256=9330ced4a976604865c2a76ce158e2bc608fa83999552e85a32ec06f85f427db
+  nokogiri (1.18.2-x86_64-linux-musl) sha256=1cd7786ed15c76958d6a8f9a864df6208fecd624c340eb4ed211fbea60328f02
   object_identifier (0.10.0) sha256=161b64222f779fa224dffc1088f6b0f9c587654031b18c742d2f612530a40a1d
   object_inspector (0.8.2) sha256=5255e62284e088f569d731f5ddda47b0ebed6b06dfaad5a14e4352ff4f8662bc
   ostruct (0.6.1) sha256=09a3fb7ecc1fa4039f25418cc05ae9c82bd520472c5c6a6f515f03e4988cb817
   parallel (1.26.3) sha256=d86babb7a2b814be9f4b81587bf0b6ce2da7d45969fab24d8ae4bf2bb4d4c7ef
   parser (3.3.7.0) sha256=7449011771e3e7881297859b849de26a6f4fccd515bece9520a87e7d2116119b
   pg (1.5.9) sha256=761efbdf73b66516f0c26fcbe6515dc7500c3f0aa1a1b853feae245433c64fdc
+  pp (0.6.2) sha256=947ec3120c6f92195f8ee8aa25a7b2c5297bb106d83b41baa02983686577b6ff
+  prettyprint (0.2.0) sha256=2bc9e15581a94742064a3cc8b0fb9d45aae3d03a1baa6ef80922627a0766f193
   propshaft (1.1.0) sha256=d389361faf66aeb17e8d204828962c1e506edd14a1a17adb3fa475435c070f6b
   psych (5.2.3) sha256=84a54bb952d14604fea22d99938348814678782f58b12648fcdfa4d2fce859ee
   puma (6.5.0) sha256=94d1b75cab7f356d52e4f1b17b9040a090889b341dbeee6ee3703f441dc189f2
@@ -576,32 +583,33 @@ CHECKSUMS
   reline (0.6.0) sha256=57620375dcbe56ec09bac7192bfb7460c716bbf0054dc94345ecaa5438e539d2
   requestjs-rails (0.0.12) sha256=d3f863b16ae3469b2ebb83110b9831d74375f44e06b1194b5052a997fc2c48e7
   rexml (3.4.0) sha256=efbea1efba7fa151158e0ee1e643525834da2d8eb4cf744aa68f6480bc9804b2
-  rubocop (1.70.0) sha256=96751f8440b36a0ac6e9a8ab596900803118d83d6b83f2037bf8b3d7a5bc440e
+  rubocop (1.71.0) sha256=e19679efd447346ac476122313d3788ae23c38214790bcf660e984c747608bf0
   rubocop-ast (1.37.0) sha256=9513ac88aaf113d04b52912533ffe46475de1362d4aa41141b51b2455827c080
   rubocop-minitest (0.36.0) sha256=1d15850849c685ff4b6d64dd801ec2d13eb2fe56b6f7ce9aab93d1b0508e7b9f
   rubocop-performance (1.23.1) sha256=f22f86a795f5e6a6180aac2c6fc172534b173a068d6ed3396d6460523e051b82
-  rubocop-rails (2.29.0) sha256=35bffd140c80671453aafac0e2d5ab5b3dd65736a3fc8f3936ccca226b89c234
+  rubocop-rails (2.29.1) sha256=41c2fcf48d5d62f4a5f574d5f1c97bbaf4cba88ee367936c98b3422d047b17aa
   rubocop-rake (0.6.0) sha256=56b6f22189af4b33d4f4e490a555c09f1281b02f4d48c3a61f6e8fe5f401d8db
   ruby-progressbar (1.13.0) sha256=80fc9c47a9b640d6834e0dc7b3c94c9df37f08cb072b7761e4a71e22cff29b33
   say (0.7.0)
   securerandom (0.4.1) sha256=cc5193d414a4341b6e225f0cb4446aceca8e50d5e1888743fac16987638ea0b1
   simplecov (0.22.0) sha256=fe2622c7834ff23b98066bb0a854284b2729a569ac659f82621fc22ef36213a5
   simplecov-html (0.13.1) sha256=5dab0b7ee612e60e9887ad57693832fdf4695b4c0c859eaea5f95c18791ef10b
   simplecov_json_formatter (0.1.4) sha256=529418fbe8de1713ac2b2d612aa3daa56d316975d307244399fa4838c601b428
-  solid_cable (3.0.5) sha256=258ac22d103275b40affdf86421047899aab22376e78719cfe806c5561403459
+  solid_cable (3.0.7) sha256=f2bce91e17e2c6e04c3c5e9905cc31b1078ff991702278c8bb1ac2e09f441a21
   solid_cache (1.0.6) sha256=fe1acf73fbe4a6a53620425317949082d3b99e0cfd35416106b56220fa66c311
   solid_queue (1.1.2) sha256=178c9396d1cf0dac595c7508da90ddb397d25848ca007b5c5ed48e6ac6fc360c
   sshkit (1.23.2) sha256=76d7088fddeaf3ac37bad20e7121f7352367cae6bb0cdbc7d7354efc714d213b
   statusable (0.5.0) sha256=d0d88fe4efa701ff90e76636b3a31d9fea156733250e2c33445de84b4311204d
   stimulus-rails (1.3.4) sha256=765676ffa1f33af64ce026d26b48e8ffb2e0b94e0f50e9119e11d6107d67cb06
   stringio (3.1.2) sha256=204f1828f85cdb39d57cac4abc6dc44b04505a223f131587f2e20ae3729ba131
-  tailwindcss-rails (3.2.0) sha256=d8dbcc1e9cd1ba7b8b68300e45dbc61a26252bd6df3d4805bdde76176ca8e3cc
-  tailwindcss-ruby (3.4.17) sha256=464fb7cc45f1bd7446af3457a2007651eee07491df9b03ae2f1ac53b5203c427
-  tailwindcss-ruby (3.4.17-aarch64-linux) sha256=a013deb088c6f32d62bb17fa804b5599486e60d76dd826d4be7697a92e881284
-  tailwindcss-ruby (3.4.17-arm-linux) sha256=5562183cd75418e18427ff227a47bccba1d325f3c6a2384d752fadfe8d4ce1ba
-  tailwindcss-ruby (3.4.17-arm64-darwin) sha256=07d83952b0bd380fd759e7b95ea75ee3babe08425ea290d078a50cb592791658
-  tailwindcss-ruby (3.4.17-x86_64-darwin) sha256=94ec8a042507c1281060872b661d590491ac763bbbd5c84f16555a69a1f6c528
-  tailwindcss-ruby (3.4.17-x86_64-linux) sha256=5c607785d4d38d3d70f5ee5cb6a0e846fa1de32f911a7dcaca9cb94feaa864ff
+  tailwindcss-rails (4.0.0.rc2) sha256=8f403392384fce5c95f334b3db7096fc139874807f785143f26bae342d9c209e
+  tailwindcss-ruby (4.0.0) sha256=edcbfb0f6e6b611ae6d223995cf3a427cedca5621cd496f422440a42c72c9b78
+  tailwindcss-ruby (4.0.0-aarch64-linux-gnu) sha256=255a11ac95653f19197b154f3c36be9a48b3b1446ca2574f2a3ac31e434384b9
+  tailwindcss-ruby (4.0.0-aarch64-linux-musl) sha256=08249bd222cf4f5b916944ef655cf5a0c65cb0fe06c3e302790b6ae13e1ec5d0
+  tailwindcss-ruby (4.0.0-arm64-darwin) sha256=9164f96a12ce671f1dadf1d850fb47c880d0e441aa474c509ed543b3266ded34
+  tailwindcss-ruby (4.0.0-x86_64-darwin) sha256=4606bc700bd97023e0160f1a2e87c0f72ee802bc7bd65d4536f1caacd6a4962b
+  tailwindcss-ruby (4.0.0-x86_64-linux-gnu) sha256=e6018f23fd78fc7fea55ff593b832b6c1d702328b8cb9d4edca5ef86fe2f7342
+  tailwindcss-ruby (4.0.0-x86_64-linux-musl) sha256=1ceace91115dd99adf929a6cf393b9013140b3f247e5f3b80f8b2f389152f5de
   thor (1.3.2) sha256=eef0293b9e24158ccad7ab383ae83534b7ad4ed99c09f96f1a6b036550abbeda
   thruster (0.1.10) sha256=80cbeaa660312e24c779048e2c4a73d973a4a99b4252492f0649fbfb63e2efa6
   thruster (0.1.10-aarch64-linux) sha256=70f446efa6d3b4839a18773de032aed8a43e4856bbc1c043ef396e4ccb1524e6