feat: add page-fetcher-api — centralised Playwright page fetcher

Introduces page-fetcher-api, a new internal ASP.NET Core service that
centralises all web-page fetching through a single Playwright (headless
Chromium) browser instance. All fetches are persisted to the pageFetcher
SQL schema for auditing.

New projects:
- Apis/page-fetcher-api-models: FetchPageRequest, FetchPageResponse, IPageFetcherApiClient
- Apis/page-fetcher-data: PageFetchDbContext, PageFetchEntity, InitialSchema migration (schema: pageFetcher)
- Apis/page-fetcher-api: PlaywrightBrowserService (singleton), PageFetcherService, PageController

Changes to existing services:
- cv-matcher-api: JobTextExtractor now calls IPageFetcherApiClient instead of HttpClient
- cv-search-job: HtmlJobSearcher uses IPageFetcherApiClient (removes inline Playwright);
  CvSearchJobTask fetches individual job pages and applies keyword pre-filter before
  LLM call; passes pre-fetched JobDescription to cv-matcher-api to skip re-fetch
- common: add PageFetcherApiSettings
- docker-compose.yml, build.yml: add new service + env vars for callers

Closes #43

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

Apis/cv-matcher-api/Program.cs

@@ -13,6 +13,7 @@ using Microsoft.EntityFrameworkCore;
 using Refit;
 using Serilog;
 using Common.Settings;
+using PageFetcher.Models;
 using StartupHelpers;
 using System.Reflection;
 
@@ -36,6 +37,16 @@ try
     builder.Services.Configure<CvMatcher.Models.Settings.AiSettings>(builder.Configuration.GetSection("Ai"));
     builder.Services.Configure<MatcherSettings>(builder.Configuration.GetSection("Matcher"));
     builder.Services.Configure<JobSearchSettings>(builder.Configuration.GetSection("JobSearch"));
+    builder.Services.Configure<PageFetcherApiSettings>(builder.Configuration.GetSection("PageFetcherApi"));
+
+    builder.Services.AddRefitClient<IPageFetcherApiClient>()
+        .ConfigureHttpClient((sp, c) =>
+        {
+            var settings = sp.GetRequiredService<Microsoft.Extensions.Options.IOptions<PageFetcherApiSettings>>().Value;
+            c.BaseAddress = new Uri(settings.BaseUrl.TrimEnd('/') + "/");
+            if (!string.IsNullOrWhiteSpace(settings.InternalApiKey))
+                c.DefaultRequestHeaders.Add("X-Internal-Api-Key", settings.InternalApiKey);
+        });
 
     builder.Services.AddRefitClient<IRefitRagApi>()
         .ConfigureHttpClient((sp, c) =>
@@ -50,7 +61,7 @@ try
 
     builder.Services.AddScoped<IRagApiClient, RagApiClient>();
     builder.Services.AddHttpClient<IMatcherAiClient, MatcherAiClient>();
-    builder.Services.AddHttpClient<IJobTextExtractor, JobTextExtractor>();
+    builder.Services.AddScoped<IJobTextExtractor, JobTextExtractor>();
 
     builder.Services.AddDbContext<CvMatcherDbContext>(options =>
     {

Apis/cv-matcher-api/Services/JobTextExtractor.cs

@@ -1,26 +1,23 @@
-using System.Net;
-using System.Text.RegularExpressions;
 using CvMatcher.Models.Settings;
 using Api.Services.Contracts;
 using Microsoft.Extensions.Options;
+using PageFetcher.Models;
 
 namespace Api.Services;
 
 /// <summary>
 /// Extracts normalised plain text from a job posting, either from a pasted description or by
-/// fetching and stripping the HTML of the job page URL.
+/// fetching the job page text via <c>page-fetcher-api</c> (headless Chromium rendering).
 /// </summary>
 public sealed class JobTextExtractor : IJobTextExtractor
 {
-    private readonly HttpClient _http;
+    private readonly IPageFetcherApiClient _pageFetcher;
     private readonly MatcherSettings _settings;
 
-    public JobTextExtractor(HttpClient http, IOptions<MatcherSettings> options)
+    public JobTextExtractor(IPageFetcherApiClient pageFetcher, IOptions<MatcherSettings> options)
     {
-        _http = http;
+        _pageFetcher = pageFetcher;
         _settings = options.Value;
-        _http.Timeout = TimeSpan.FromSeconds(25);
-        _http.DefaultRequestHeaders.UserAgent.ParseAdd("MyAi.ro CV Matcher/1.0");
     }
 
     /// <inheritdoc />
@@ -31,15 +28,18 @@ public sealed class JobTextExtractor : IJobTextExtractor
 
         if (string.IsNullOrWhiteSpace(jobUrl)) return string.Empty;
         if (!Uri.TryCreate(jobUrl, UriKind.Absolute, out var uri) || uri.Scheme is not ("http" or "https"))
-        {
             throw new InvalidOperationException("Invalid job URL.");
-        }
 
-        var html = await _http.GetStringAsync(uri, ct);
-        html = Regex.Replace(html, "<script[\\s\\S]*?</script>", " ", RegexOptions.IgnoreCase);
-        html = Regex.Replace(html, "<style[\\s\\S]*?</style>", " ", RegexOptions.IgnoreCase);
-        html = Regex.Replace(html, "<[^>]+>", " ");
-        return Limit(Normalize(WebUtility.HtmlDecode(html)));
+        var response = await _pageFetcher.FetchAsync(new FetchPageRequest
+        {
+            Url = jobUrl,
+            CallerService = "cv-matcher-api"
+        }, ct);
+
+        if (!response.Success)
+            throw new InvalidOperationException($"Failed to fetch job page: {response.Error}");
+
+        return Limit(Normalize(response.Text));
     }
 
     /// <summary>Truncates text to the configured maximum character count.</summary>

Apis/cv-matcher-api/cv-matcher-api.csproj

@@ -82,6 +82,7 @@
     <ProjectReference Include="..\cv-search-data\cv-search-data.csproj" />
     <ProjectReference Include="..\cv-matcher-data\cv-matcher-data.csproj" />
     <ProjectReference Include="..\common\common.csproj" />
+    <ProjectReference Include="..\page-fetcher-api-models\page-fetcher-api-models.csproj" />
     <ProjectReference Include="..\..\Helpers\startup-helpers\startup-helpers.csproj" />
   </ItemGroup>
 </Project>