feat: git push status indicator + multi-select bulk push

- DB migration v2: git_pushed_at column on incidents
- markIncidentPushed(id): stamps the push timestamp
- loadGitConfig(): shared helper in lib/git.ts, removes duplication
- Home screen: colored dot per incident (red=never pushed,
  orange=dirty/modified after push, green=up to date);
  dot visible only when git is configured
- Home screen: long-press enters selection mode, tap toggles;
  action bar with Select unpushed / Select all shortcuts +
  bulk push with sequential progress counter
- [id].tsx: marks incident pushed after successful push,
  updates local state without reload

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

app/incident/[id].tsx

@@ -10,10 +10,9 @@ import {
 import { useLocalSearchParams, router, useNavigation } from "expo-router";
 import * as Clipboard from "expo-clipboard";
 import * as SecureStore from "expo-secure-store";
-import { getIncidentById, updateIncident, deleteIncident } from "@/lib/db";
+import { getIncidentById, updateIncident, deleteIncident, markIncidentPushed } from "@/lib/db";
 import { renderMarkdown } from "@/lib/markdown";
-import { pushIncidentToGit } from "@/lib/git";
-import type { GitProvider } from "@/lib/git";
+import { pushIncidentToGit, loadGitConfig } from "@/lib/git";
 import type { Incident } from "@/types/incident";
 import { Colors } from "@/constants/theme";
 
@@ -81,60 +80,21 @@ export default function IncidentDetailScreen() {
 
   async function handleGitPush() {
     if (!incident) return;
-    const [provider, template, giteaUrl, giteaToken, giteaOwner, giteaRepo, githubToken, githubOwner, githubRepo, gitlabUrl, gitlabToken, gitlabOwner, gitlabRepo] =
-      await Promise.all([
-        SecureStore.getItemAsync("git_provider"),
-        SecureStore.getItemAsync("md_template"),
-        SecureStore.getItemAsync("gitea_url"),
-        SecureStore.getItemAsync("gitea_token"),
-        SecureStore.getItemAsync("gitea_owner"),
-        SecureStore.getItemAsync("gitea_repo"),
-        SecureStore.getItemAsync("github_token"),
-        SecureStore.getItemAsync("github_owner"),
-        SecureStore.getItemAsync("github_repo"),
-        SecureStore.getItemAsync("gitlab_url"),
-        SecureStore.getItemAsync("gitlab_token"),
-        SecureStore.getItemAsync("gitlab_owner"),
-        SecureStore.getItemAsync("gitlab_repo"),
-      ]);
-
-    const p = (provider ?? "gitea") as GitProvider;
-
-    let url: string | undefined;
-    let token: string | null;
-    let owner: string | null;
-    let repo: string | null;
-
-    if (p === "gitea") {
-      url = giteaUrl ?? undefined;
-      token = giteaToken;
-      owner = giteaOwner;
-      repo = giteaRepo;
-    } else if (p === "github") {
-      token = githubToken;
-      owner = githubOwner;
-      repo = githubRepo;
-    } else {
-      url = gitlabUrl ?? undefined;
-      token = gitlabToken;
-      owner = gitlabOwner;
-      repo = gitlabRepo;
-    }
-
-    const needsUrl = p === "gitea" || p === "gitlab";
-    if (!token || !owner || !repo || (needsUrl && !url)) {
-      Alert.alert("Git not configured", `Set up ${p.charAt(0).toUpperCase() + p.slice(1)} in Settings first.`);
+    const [config, template] = await Promise.all([
+      loadGitConfig(),
+      SecureStore.getItemAsync("md_template"),
+    ]);
+    if (!config) {
+      Alert.alert("Git not configured", "Set up a git provider in Settings first.");
       return;
     }
-
     setPushing(true);
-    const result = await pushIncidentToGit(
-      incident,
-      { provider: p, url, token, owner, repo },
-      template ?? undefined
-    );
+    const result = await pushIncidentToGit(incident, config, template ?? undefined);
     setPushing(false);
     if (result.success) {
+      const now = new Date().toISOString();
+      await markIncidentPushed(incident.id);
+      setIncident((prev) => prev ? { ...prev, gitPushedAt: now } : prev);
       Alert.alert("Pushed", result.url ?? "Push successful.");
     } else {
       Alert.alert("Push failed", result.error ?? "Unknown error");