Fix project name overflow and add 6-word validation limit (#972)

* Fix project name overflow and add validation

This commit addresses issue #971 by implementing both UI fixes and
validation to prevent excessively long project names.

Changes:
1. Add word-break and line-clamp to ProjectBanner.tsx to handle
   overflow gracefully with line-clamp-3 for names
2. Add frontend validation in ProjectModal.tsx limiting names to
   6 words maximum
3. Add backend validation in project.js model with custom wordCount
   validator
4. Show user-friendly error messages when validation fails

This ensures project names remain concise and UI-friendly while
preventing the extreme overflow cases that were possible before.

Fixes #971

* Add overflow-hidden to make line-clamp work properly

The line-clamp utility requires explicit overflow-hidden to function
correctly. Without it, the text continues to display in full rather
than being truncated with ellipsis.

* Fix line-clamp using inline CSS styles

Tailwind's line-clamp utilities weren't working, so switched to using
inline styles with the standard CSS approach:
- display: -webkit-box
- -webkit-line-clamp: 3
- -webkit-box-orient: vertical

This ensures the text truncation works reliably across browsers.

* Use Tailwind line-clamp utilities (already defined in CSS)

The project already has line-clamp-1/2/3 utilities properly defined
in tailwind.css with all the necessary webkit properties. Simplified
the component to use these existing utilities instead of inline styles.

* Add dedicated CSS classes with !important for line-clamp

Created custom project-name-clamp and project-desc-clamp classes
with !important flags to ensure they override any conflicting styles.
This should finally fix the text truncation issue.

* Use component-scoped styles for line-clamp

Adding inline style tag in the component to ensure the line-clamp
CSS is definitely loaded and applied. This bypasses any potential
issues with external CSS compilation or loading order.

* Change project name line-clamp from 3 to 2 lines

Limiting project name display to 2 lines with ellipsis for better
visual density and cleaner appearance.

* Increase line-height for project name in banner

Added line-height: 1.3 to project name for better readability
and visual spacing between lines.

backend/models/project.js

@@ -19,6 +19,23 @@ module.exports = (sequelize) => {
             name: {
                 type: DataTypes.STRING,
                 allowNull: false,
+                validate: {
+                    notEmpty: {
+                        msg: 'Project name is required',
+                    },
+                    wordCount(value) {
+                        const MAX_WORDS = 6;
+                        const wordCount = value
+                            .trim()
+                            .split(/\s+/)
+                            .filter((word) => word.length > 0).length;
+                        if (wordCount > MAX_WORDS) {
+                            throw new Error(
+                                `Project name must be ${MAX_WORDS} words or less`
+                            );
+                        }
+                    },
+                },
             },
             description: {
                 type: DataTypes.TEXT,

frontend/components/Project/ProjectBanner.tsx

@@ -45,6 +45,23 @@ const ProjectBanner: React.FC<ProjectBannerProps> = ({
 
     return (
         <div className="w-full">
+            <style>{`
+                .project-banner-name {
+                    display: -webkit-box;
+                    -webkit-box-orient: vertical;
+                    -webkit-line-clamp: 2;
+                    overflow: hidden;
+                    text-overflow: ellipsis;
+                    line-height: 1.3;
+                }
+                .project-banner-desc {
+                    display: -webkit-box;
+                    -webkit-box-orient: vertical;
+                    -webkit-line-clamp: 2;
+                    overflow: hidden;
+                    text-overflow: ellipsis;
+                }
+            `}</style>
             <div className="mb-6 overflow-hidden relative group">
                 {project.image_url ? (
                     <img
@@ -63,12 +80,12 @@ const ProjectBanner: React.FC<ProjectBannerProps> = ({
                 )}
 
                 <div className="absolute inset-0 bg-black bg-opacity-40 flex items-center justify-center">
-                    <div className="text-center px-4">
-                        <h1 className="text-4xl md:text-5xl font-bold text-white drop-shadow-lg">
+                    <div className="text-center px-4 w-full max-w-5xl">
+                        <h1 className="text-4xl md:text-5xl font-bold text-white drop-shadow-lg project-banner-name">
                             {project.name}
                         </h1>
                         {project.description && (
-                            <p className="text-lg md:text-xl text-white/90 mt-2 font-light drop-shadow-md max-w-2xl mx-auto">
+                            <p className="text-lg md:text-xl text-white/90 mt-2 font-light drop-shadow-md max-w-2xl mx-auto project-banner-desc">
                                 {project.description}
                             </p>
                         )}

frontend/components/Project/ProjectModal.tsx

@@ -268,6 +268,21 @@ const ProjectModal: React.FC<ProjectModalProps> = ({
             return;
         }
 
+        const MAX_WORDS = 6;
+        const wordCount = formData.name
+            .trim()
+            .split(/\s+/)
+            .filter((word) => word.length > 0).length;
+        if (wordCount > MAX_WORDS) {
+            setError(
+                t(
+                    'errors.projectNameTooLong',
+                    `Project name must be ${MAX_WORDS} words or less`
+                )
+            );
+            return;
+        }
+
         setIsSaving(true);
         try {
             // Add new tags to the global store

frontend/styles/tailwind.css

@@ -170,6 +170,21 @@ select:focus {
   display: none; /* Chrome/Safari */
 }
 
+/* Project name and description line clamp */
+.project-name-clamp {
+  display: -webkit-box !important;
+  -webkit-box-orient: vertical !important;
+  -webkit-line-clamp: 3 !important;
+  overflow: hidden !important;
+}
+
+.project-desc-clamp {
+  display: -webkit-box !important;
+  -webkit-box-orient: vertical !important;
+  -webkit-line-clamp: 2 !important;
+  overflow: hidden !important;
+}
+
 @layer utilities {
   .line-clamp-1,
   .line-clamp-2,