separate account settings from shop settings

- Create dedicated /admin/account page for user account management
- Move email, password, and 2FA settings from /admin/settings
- Add Account link to top of admin sidebar navigation
- Add TOTP-based two-factor authentication with NimbleTOTP
- Add TOTP verification LiveView for login flow
- Add AccountController for TOTP session management
- Remove Advanced section from settings (duplicated in dev tools)
- Remove user email from sidebar footer (replaced by Account link)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

mix.lock

@@ -17,6 +17,7 @@
   "ecto_sql": {:hex, :ecto_sql, "3.13.4", "b6e9d07557ddba62508a9ce4a484989a5bb5e9a048ae0e695f6d93f095c25d60", [:mix], [{:db_connection, "~> 2.4.1 or ~> 2.5", [hex: :db_connection, repo: "hexpm", optional: false]}, {:ecto, "~> 3.13.0", [hex: :ecto, repo: "hexpm", optional: false]}, {:myxql, "~> 0.7", [hex: :myxql, repo: "hexpm", optional: true]}, {:postgrex, "~> 0.19 or ~> 1.0", [hex: :postgrex, repo: "hexpm", optional: true]}, {:tds, "~> 2.1.1 or ~> 2.2", [hex: :tds, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4.0 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "2b38cf0749ca4d1c5a8bcbff79bbe15446861ca12a61f9fba604486cb6b62a14"},
   "ecto_sqlite3": {:hex, :ecto_sqlite3, "0.22.0", "edab2d0f701b7dd05dcf7e2d97769c106aff62b5cfddc000d1dd6f46b9cbd8c3", [:mix], [{:decimal, "~> 1.6 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:ecto, "~> 3.13.0", [hex: :ecto, repo: "hexpm", optional: false]}, {:ecto_sql, "~> 3.13.0", [hex: :ecto_sql, repo: "hexpm", optional: false]}, {:exqlite, "~> 0.22", [hex: :exqlite, repo: "hexpm", optional: false]}], "hexpm", "5af9e031bffcc5da0b7bca90c271a7b1e7c04a93fecf7f6cd35bc1b1921a64bd"},
   "elixir_make": {:hex, :elixir_make, "0.9.0", "6484b3cd8c0cee58f09f05ecaf1a140a8c97670671a6a0e7ab4dc326c3109726", [:mix], [], "hexpm", "db23d4fd8b757462ad02f8aa73431a426fe6671c80b200d9710caf3d1dd0ffdb"},
+  "eqrcode": {:hex, :eqrcode, "0.2.1", "d12838813e8fc87b8940cc05f9baadb189031f6009facdc56ff074375ec73b6e", [:mix], [], "hexpm", "d5828a222b904c68360e7dc2a40c3ef33a1328b7c074583898040f389f928025"},
   "erlex": {:hex, :erlex, "0.2.8", "cd8116f20f3c0afe376d1e8d1f0ae2452337729f68be016ea544a72f767d9c12", [:mix], [], "hexpm", "9d66ff9fedf69e49dc3fd12831e12a8a37b76f8651dd21cd45fcf5561a8a7590"},
   "error_tracker": {:hex, :error_tracker, "0.7.1", "074f10bfb01961bd0d51eb010c6ddbe13bf40eb4ddfbb25538680ddb520ab1aa", [:mix], [{:ecto, "~> 3.13", [hex: :ecto, repo: "hexpm", optional: false]}, {:ecto_sql, "~> 3.13", [hex: :ecto_sql, repo: "hexpm", optional: false]}, {:ecto_sqlite3, ">= 0.0.0", [hex: :ecto_sqlite3, repo: "hexpm", optional: true]}, {:igniter, "~> 0.5", [hex: :igniter, repo: "hexpm", optional: true]}, {:jason, "~> 1.1", [hex: :jason, repo: "hexpm", optional: false]}, {:myxql, ">= 0.0.0", [hex: :myxql, repo: "hexpm", optional: true]}, {:phoenix_ecto, "~> 4.6", [hex: :phoenix_ecto, repo: "hexpm", optional: false]}, {:phoenix_live_view, "~> 1.0", [hex: :phoenix_live_view, repo: "hexpm", optional: false]}, {:plug, "~> 1.10", [hex: :plug, repo: "hexpm", optional: false]}, {:postgrex, ">= 0.0.0", [hex: :postgrex, repo: "hexpm", optional: true]}], "hexpm", "cc77434c084d100e17dcc5ccea6bed05b15748186df5207e21fb761651bf4e0d"},
   "esbuild": {:hex, :esbuild, "0.10.0", "b0aa3388a1c23e727c5a3e7427c932d89ee791746b0081bbe56103e9ef3d291f", [:mix], [{:jason, "~> 1.4", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "468489cda427b974a7cc9f03ace55368a83e1a7be12fba7e30969af78e5f8c70"},
@@ -50,6 +51,7 @@
   "nimble_ownership": {:hex, :nimble_ownership, "1.0.2", "fa8a6f2d8c592ad4d79b2ca617473c6aefd5869abfa02563a77682038bf916cf", [:mix], [], "hexpm", "098af64e1f6f8609c6672127cfe9e9590a5d3fcdd82bc17a377b8692fd81a879"},
   "nimble_parsec": {:hex, :nimble_parsec, "1.4.2", "8efba0122db06df95bfaa78f791344a89352ba04baedd3849593bfce4d0dc1c6", [:mix], [], "hexpm", "4b21398942dda052b403bbe1da991ccd03a053668d147d53fb8c4e0efe09c973"},
   "nimble_pool": {:hex, :nimble_pool, "1.1.0", "bf9c29fbdcba3564a8b800d1eeb5a3c58f36e1e11d7b7fb2e084a643f645f06b", [:mix], [], "hexpm", "af2e4e6b34197db81f7aad230c1118eac993acc0dae6bc83bac0126d4ae0813a"},
+  "nimble_totp": {:hex, :nimble_totp, "1.0.0", "79753bae6ce59fd7cacdb21501a1dbac249e53a51c4cd22b34fa8438ee067283", [:mix], [], "hexpm", "6ce5e4c068feecdb782e85b18237f86f66541523e6bad123e02ee1adbe48eda9"},
   "oban": {:hex, :oban, "2.20.2", "f23313d83b578305cafa825a036cad84e7e2d61549ecbece3a2e6526d347cc3b", [:mix], [{:ecto_sql, "~> 3.10", [hex: :ecto_sql, repo: "hexpm", optional: false]}, {:ecto_sqlite3, "~> 0.9", [hex: :ecto_sqlite3, repo: "hexpm", optional: true]}, {:igniter, "~> 0.5", [hex: :igniter, repo: "hexpm", optional: true]}, {:jason, "~> 1.1", [hex: :jason, repo: "hexpm", optional: true]}, {:myxql, "~> 0.7", [hex: :myxql, repo: "hexpm", optional: true]}, {:postgrex, "~> 0.20", [hex: :postgrex, repo: "hexpm", optional: true]}, {:telemetry, "~> 1.3", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "523365ef0217781c061d15f496e3200a5f1b43e08b1a27c34799ef8bfe95815f"},
   "oban_met": {:hex, :oban_met, "1.0.6", "2a5500aff496b7ac4b830b0b03b08e920625a051bb6890981fbb53b15f1cbdc0", [:mix], [{:oban, "~> 2.19", [hex: :oban, repo: "hexpm", optional: false]}], "hexpm", "15ea3303de76225878a8e6c25a9d62bd1e2e9dd1c46ac8487d873b9f99e8dcee"},
   "oban_web": {:hex, :oban_web, "2.11.8", "be6521b5b1eb6d4182f40f5acc948ea65d243451b94c26f06a7329575748f695", [:mix], [{:jason, "~> 1.2", [hex: :jason, repo: "hexpm", optional: false]}, {:oban, "~> 2.19", [hex: :oban, repo: "hexpm", optional: false]}, {:oban_met, "~> 1.0", [hex: :oban_met, repo: "hexpm", optional: false]}, {:phoenix, "~> 1.7", [hex: :phoenix, repo: "hexpm", optional: false]}, {:phoenix_html, "~> 3.3 or ~> 4.0", [hex: :phoenix_html, repo: "hexpm", optional: false]}, {:phoenix_live_view, "~> 1.0", [hex: :phoenix_live_view, repo: "hexpm", optional: false]}, {:phoenix_pubsub, "~> 2.1", [hex: :phoenix_pubsub, repo: "hexpm", optional: false]}], "hexpm", "d0c04a836d929ef037e96be142285238275aabbafe62543bbdcc3f541d29ec30"},