Move version display to GET /api/health/version in HealthController

Uses GetApplicationVersion(Assembly.GetExecutingAssembly()) — the same
timestamp-based version already logged at startup and baked into the
assembly via the csproj <Version> property. Removes the minimal-API
/version endpoint from web/Program.cs and reverts the web Dockerfile
APP_VERSION build-arg (no longer needed).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/build.yml

@@ -47,10 +47,7 @@ jobs:
 
       - name: Build Web image
         run: |
-          APP_VERSION="1.0.$(git rev-list --count HEAD)"
-          docker build -f web/Dockerfile \
-            --build-arg APP_VERSION="${APP_VERSION}" \
-            -t "${REGISTRY_HOST}/${WEB_IMAGE}:${IMAGE_TAG}" .
+          docker build -f web/Dockerfile -t "${REGISTRY_HOST}/${WEB_IMAGE}:${IMAGE_TAG}" .
 
       - name: Build CV cleanup job image
         run: |

Apis/api/Controllers/HealthController.cs

@@ -1,5 +1,7 @@
+using System.Reflection;
 using Microsoft.AspNetCore.Cors;
 using Microsoft.AspNetCore.Mvc;
+using StartupHelpers;
 using Swashbuckle.AspNetCore.Annotations;
 
 namespace Api.Controllers
@@ -14,6 +16,18 @@ namespace Api.Controllers
     [EnableCors("FrontendOnly")]
     public sealed class HealthController : ControllerBase
     {
+        /// <summary>
+        /// Returns the deployed API version.
+        /// </summary>
+        /// <returns>200 OK with JSON payload: { "version": "1.0.0-build.20250522103045" }</returns>
+        // GET api/health/version
+        [HttpGet("version")]
+        [SwaggerOperation(Summary = "API version", Description = "Returns the deployed API assembly version.")]
+        [SwaggerResponse(StatusCodes.Status200OK, "Version returned")]
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        public IActionResult Version() =>
+            Ok(new { version = StartupExtensions.GetApplicationVersion(Assembly.GetExecutingAssembly()) });
+
         /// <summary>
         /// Liveness probe.
         /// Indicates whether the process is running. Used by orchestration systems to confirm the process is alive.

web/Dockerfile

@@ -13,8 +13,6 @@ FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS final
 WORKDIR /app
 EXPOSE 8080
 ENV ASPNETCORE_URLS=http://0.0.0.0:8080
-ARG APP_VERSION=1.0.0
-ENV APP_VERSION=${APP_VERSION}
 
 COPY --from=build /app/publish .
 ENTRYPOINT ["dotnet", "web.dll"]

web/Program.cs

@@ -14,9 +14,6 @@ var app = builder.Build();
 
 app.UseMiddleware<SiteModeMiddleware>();
 
-app.MapGet("/version", (IConfiguration config) =>
-    Results.Json(new { version = config["APP_VERSION"] ?? "unknown" }));
-
 // Static site
 app.UseDefaultFiles();
 app.UseStaticFiles();

web/wwwroot/js/main.js

@@ -263,7 +263,7 @@
 
 	$('#year').text(new Date().getFullYear());
 
-	$.getJSON('/version').done(function (data) {
+	$.getJSON('/api/health/version').done(function (data) {
 		if (data && data.version) {
 			$('#app-version').text('v' + data.version);
 		}