Fix commits tab + add CI job logs; bump to 1.7

Commits tab was empty: Gitea PR commits have no 'id' field (only sha), but
PRCommit.id was a non-optional let decoded from 'id', so decoding [PRCommit]
always threw and the tab silently showed nothing. Make PRCommit.id a computed
sha-based identity so the array decodes and renders.

CI: add a Logs button per job that fetches the job's raw log text
(/actions/jobs/{id}/logs) into a viewable, shareable screen. Bump to 1.7.

GiteaPR/Detail/JobLogsView.swift

@@ -0,0 +1,66 @@
+import SwiftUI
+
+/// Displays a Gitea Actions job's raw log text, with a share button.
+struct JobLogsView: View {
+    let repo: Repository
+    let runID: Int64
+    let jobID: Int64
+    let jobName: String
+
+    @State private var text = ""
+    @State private var isLoading = true
+    @State private var errorMessage: String?
+    @State private var showShare = false
+
+    var body: some View {
+        Group {
+            if isLoading {
+                ProgressView("Loading logs…")
+            } else if let errorMessage {
+                ContentUnavailableView(
+                    "Couldn't load logs",
+                    systemImage: "doc.text",
+                    description: Text(errorMessage))
+            } else {
+                ScrollView {
+                    Text(text)
+                        .font(.caption.monospaced())
+                        .frame(maxWidth: .infinity, alignment: .leading)
+                        .textSelection(.enabled)
+                        .padding()
+                }
+            }
+        }
+        .navigationTitle(jobName)
+        .navigationBarTitleDisplayMode(.inline)
+        .toolbar {
+            ToolbarItem(placement: .primaryAction) {
+                Button {
+                    showShare = true
+                } label: {
+                    Image(systemName: "square.and.arrow.up")
+                }
+                .disabled(text.isEmpty)
+            }
+        }
+        .sheet(isPresented: $showShare) {
+            ShareSheet(text: text)
+        }
+        .task { await load() }
+    }
+
+    private func load() async {
+        isLoading = true
+        errorMessage = nil
+        defer { isLoading = false }
+        guard let client = SettingsStore.shared.client() else {
+            errorMessage = "Not configured."
+            return
+        }
+        do {
+            text = try await client.jobLogs(owner: repo.owner.login, repo: repo.name, jobID: jobID)
+        } catch {
+            errorMessage = error.localizedDescription
+        }
+    }
+}