Make complexity badge editable on task detail page

- Add ComplexityForm and ComplexityBadgePartial types
- Add /tasks/:id/complexity POST endpoint
- Add complexityBadgeWithForm component with dropdown
- Add complexity dropdown JS for keyboard navigation
- Add CSS styles for complexity dropdown
- Always show complexity badge (Set Complexity if none)

Task-Id: t-219

1 files changed, 48 insertions, 0 deletions

diff --git a/Omni/Jr/Web/Style.hs b/Omni/Jr/Web/Style.hs
index c385ac7..0f4b300 100644
--- a/Omni/Jr/Web/Style.hs
+++ b/Omni/Jr/Web/Style.hs
@@ -714,6 +714,54 @@ statusBadges = do
   ".badge-complexity-5" ? do
     backgroundColor "#fee2e2"
     color "#991b1b"
+  ".badge-complexity-none" ? do
+    backgroundColor "#f3f4f6"
+    color "#6b7280"
+  ".complexity-badge-dropdown" ? do
+    position relative
+    display inlineBlock
+  ".complexity-badge-clickable" ? do
+    cursor pointer
+    Stylesheet.key "user-select" ("none" :: Text)
+  ".complexity-badge-clickable" # hover ? do
+    opacity 0.85
+  ".complexity-dropdown-menu" ? do
+    display none
+    position absolute
+    left (px 0)
+    top (pct 100)
+    marginTop (px 2)
+    backgroundColor white
+    borderRadius (px 4) (px 4) (px 4) (px 4)
+    Stylesheet.key "box-shadow" ("0 2px 8px rgba(0,0,0,0.15)" :: Text)
+    zIndex 100
+    padding (px 4) (px 4) (px 4) (px 4)
+    minWidth (px 100)
+  ".complexity-badge-dropdown.open" |> ".complexity-dropdown-menu" ? do
+    display block
+  ".complexity-option-form" ? do
+    margin (px 0) (px 0) (px 0) (px 0)
+    padding (px 0) (px 0) (px 0) (px 0)
+  ".complexity-dropdown-option" ? do
+    display block
+    width (pct 100)
+    textAlign (alignSide sideLeft)
+    margin (px 2) (px 0) (px 2) (px 0)
+    border (px 0) none transparent
+    cursor pointer
+    transition "opacity" (ms 150) ease (sec 0)
+  ".complexity-dropdown-option" # hover ? do
+    opacity 0.7
+  ".complexity-dropdown-option" # focus ? do
+    opacity 0.85
+    Stylesheet.key "outline" ("2px solid #0066cc" :: Text)
+    Stylesheet.key "outline-offset" ("1px" :: Text)
+  ".complexity-dropdown-option.selected" ? do
+    Stylesheet.key "outline" ("2px solid #0066cc" :: Text)
+    Stylesheet.key "outline-offset" ("1px" :: Text)
+  ".complexity-badge-clickable" # focus ? do
+    Stylesheet.key "outline" ("2px solid #0066cc" :: Text)
+    Stylesheet.key "outline-offset" ("2px" :: Text)
 
 buttonStyles :: Css
 buttonStyles = do