logiguard fork: GPUI xdg-activation keyboard-focus serial fix

Single-commit orphan branch: full zed-industries/zed @ 8c74db0 source tree
with a 3-file patch applied (no upstream history).

Patch (crates/gpui_linux/src/linux/wayland/):
  - serial.rs: add SerialKind::KeyboardEnter
  - client.rs: store wl_keyboard.enter serial; add latest_serial_of()
  - window.rs: activate() uses keyboard-enter serial (Mutter focus gate)

Mutter honors window activation only when the token carries the keyboard-
focus serial from wl_keyboard.enter; GPUI used a stale mouse-press serial.
See docs/tray-window-focus-wayland.md in logiguard.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.github/workflows/pr_labeler.yml

@@ -0,0 +1,150 @@
+# Labels pull requests by author: 'bot' for bot accounts, 'staff' for
+# staff team members, 'guild' for guild members, 'first contribution' for
+# first-time external contributors.
+name: PR Labeler
+
+on:
+  pull_request_target:
+    types: [opened]
+
+permissions:
+  contents: read
+
+jobs:
+  check-authorship-and-label:
+    if: github.repository == 'zed-industries/zed'
+    runs-on: namespace-profile-2x4-ubuntu-2404
+    timeout-minutes: 5
+    steps:
+      - id: get-app-token
+        uses: actions/create-github-app-token@f8d387b68d61c58ab83c6c016672934102569859 # v3.0.0
+        with:
+          app-id: ${{ secrets.ZED_COMMUNITY_BOT_APP_ID }}
+          private-key: ${{ secrets.ZED_COMMUNITY_BOT_PRIVATE_KEY }}
+          owner: zed-industries
+
+      - id: apply-authorship-label
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
+        with:
+          github-token: ${{ steps.get-app-token.outputs.token }}
+          script: |
+            const BOT_LABEL = 'bot';
+            const STAFF_LABEL = 'staff';
+            const GUILD_LABEL = 'guild';
+            const FIRST_CONTRIBUTION_LABEL = 'first contribution';
+            const STAFF_TEAM_SLUG = 'staff';
+            const GUILD_MEMBERS = [
+              '11happy',
+              'AidanV',
+              'AmaanBilwar',
+              'MostlyKIGuess',
+              'OmChillure',
+              'Palanikannan1437',
+              'Shivansh-25',
+              'SkandaBhat',
+              'TwistingTwists',
+              'YEDASAVG',
+              'Ziqi-Yang',
+              'alanpjohn',
+              'arjunkomath',
+              'austincummings',
+              'ayushk-1801',
+              'criticic',
+              'dongdong867',
+              'emamulandalib',
+              'eureka928',
+              'feitreim',
+              'iam-liam',
+              'iksuddle',
+              'ishaksebsib',
+              'lingyaochu',
+              'loadingalias',
+              'marcocondrache',
+              'mchisolm0',
+              'nairadithya',
+              'nihalxkumar',
+              'notJoon',
+              'polyesterswing',
+              'prayanshchh',
+              'razeghi71',
+              'sarmadgulzar',
+              'seanstrom',
+              'th0jensen',
+              'tommyming',
+              'transitoryangel',
+              'virajbhartiya',
+            ];
+
+            const pr = context.payload.pull_request;
+            const author = pr.user.login;
+
+            if (pr.user.type === 'Bot') {
+              await github.rest.issues.addLabels({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: pr.number,
+                labels: [BOT_LABEL]
+              });
+              console.log(`PR #${pr.number} by ${author}: labeled '${BOT_LABEL}' (user type: '${pr.user.type}')`);
+              return;
+            }
+
+            let isStaff = false;
+            try {
+              const response = await github.rest.teams.getMembershipForUserInOrg({
+                org: 'zed-industries',
+                team_slug: STAFF_TEAM_SLUG,
+                username: author
+              });
+              isStaff = response.data.state === 'active';
+            } catch (error) {
+              if (error.status !== 404) {
+                throw error;
+              }
+            }
+
+            if (isStaff) {
+              await github.rest.issues.addLabels({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: pr.number,
+                labels: [STAFF_LABEL]
+              });
+              console.log(`PR #${pr.number} by ${author}: labeled '${STAFF_LABEL}' (staff team member)`);
+              return;
+            }
+
+            const authorLower = author.toLowerCase();
+            const isGuildMember = GUILD_MEMBERS.some(
+              (member) => member.toLowerCase() === authorLower
+            );
+            if (isGuildMember) {
+              await github.rest.issues.addLabels({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: pr.number,
+                labels: [GUILD_LABEL]
+              });
+              console.log(`PR #${pr.number} by ${author}: labeled '${GUILD_LABEL}' (guild member)`);
+              // No early return: guild members can also get 'first contribution'
+            }
+
+            // We use inverted logic here due to a suspected GitHub bug where first-time contributors
+            // get 'NONE' instead of 'FIRST_TIME_CONTRIBUTOR' or 'FIRST_TIMER'.
+            // https://github.com/orgs/community/discussions/78038
+            // This will break if GitHub ever adds new associations.
+            const association = pr.author_association;
+            const knownAssociations = ['CONTRIBUTOR', 'COLLABORATOR', 'MEMBER', 'OWNER', 'MANNEQUIN'];
+
+            if (knownAssociations.includes(association)) {
+              console.log(`PR #${pr.number} by ${author}: not a first-time contributor (association: '${association}')`);
+              return;
+            }
+
+            await github.rest.issues.addLabels({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: pr.number,
+              labels: [FIRST_CONTRIBUTION_LABEL]
+            });
+            console.log(`PR #${pr.number} by ${author}: labeled '${FIRST_CONTRIBUTION_LABEL}' (association: '${association}')`);