Add OAth flow for Gmail and update tables and UI

JobTrackerApi/Program.cs

@@ -77,6 +77,7 @@ builder.Services.AddControllers();
 builder.Services.AddDataProtection();
 builder.Services.AddHostedService<RulesHostedService>();
 builder.Services.AddHostedService<DailyExportHostedService>();
+builder.Services.AddHostedService<JobEnrichmentHostedService>();
 
 builder.Services.AddHttpClient("jobimport")
     .ConfigurePrimaryHttpMessageHandler(() => new HttpClientHandler
@@ -94,6 +95,7 @@ builder.Services.AddHttpClient("summarizer", client =>
 
 builder.Services.AddMemoryCache();
 builder.Services.AddSingleton<ISummarizerService, SummarizerService>();
+builder.Services.AddScoped<IGmailOAuthService, GmailOAuthService>();
 
 builder.Services.AddIdentityCore<ApplicationUser>(options =>
     {
@@ -449,6 +451,28 @@ CREATE TABLE IF NOT EXISTS "UserRuleSettings" (
 
     EnsureUserRuleSettingsTable(conn);
 
+    static void EnsureGmailConnectionsTable(DbConnection c)
+    {
+        Exec(c, """
+CREATE TABLE IF NOT EXISTS "GmailConnections" (
+    "Id" INTEGER NOT NULL CONSTRAINT "PK_GmailConnections" PRIMARY KEY AUTOINCREMENT,
+    "OwnerUserId" TEXT NOT NULL,
+    "GmailAddress" TEXT NOT NULL,
+    "EncryptedRefreshToken" TEXT NOT NULL,
+    "EncryptedAccessToken" TEXT NULL,
+    "AccessTokenExpiresAt" TEXT NULL,
+    "Scope" TEXT NOT NULL,
+    "ConnectedAt" TEXT NOT NULL,
+    "LastSyncedAt" TEXT NULL
+);
+""");
+
+        Exec(c, """CREATE INDEX IF NOT EXISTS "IX_GmailConnections_OwnerUserId" ON "GmailConnections" ("OwnerUserId");""");
+        Exec(c, """CREATE UNIQUE INDEX IF NOT EXISTS "IX_GmailConnections_OwnerUserId_GmailAddress" ON "GmailConnections" ("OwnerUserId", "GmailAddress");""");
+    }
+
+    EnsureGmailConnectionsTable(conn);
+
     // Legacy DB signature: migration history exists (AddCorrespondence applied), but 20260310195000 not recorded,
     // and at least one of the new columns already exists.
     var isLegacy =
@@ -478,6 +502,7 @@ CREATE TABLE IF NOT EXISTS "UserRuleSettings" (
     {
         EnsureColumn(conn, "Correspondences", "Subject", "ALTER TABLE Correspondences ADD COLUMN Subject TEXT NULL;");
         EnsureColumn(conn, "Correspondences", "Channel", "ALTER TABLE Correspondences ADD COLUMN Channel TEXT NULL;");
+        EnsureColumn(conn, "Correspondences", "ExternalMessageId", "ALTER TABLE Correspondences ADD COLUMN ExternalMessageId TEXT NULL;");
     }
 
     // Record the migration as applied.
@@ -495,6 +520,7 @@ CREATE TABLE IF NOT EXISTS "UserRuleSettings" (
     // Ensure ownership columns exist even on non-legacy DBs.
     EnsureColumn(conn, "Companies", "OwnerUserId", "ALTER TABLE Companies ADD COLUMN OwnerUserId TEXT NULL;");
     EnsureColumn(conn, "JobApplications", "OwnerUserId", "ALTER TABLE JobApplications ADD COLUMN OwnerUserId TEXT NULL;");
+    EnsureColumn(conn, "Correspondences", "ExternalMessageId", "ALTER TABLE Correspondences ADD COLUMN ExternalMessageId TEXT NULL;");
 
     // Ensure data folder exists before creating/opening SQLite files.
     Directory.CreateDirectory(paths.DataRoot);