docs+ci(v0.8.12): Resume by UUID, triage workflows, CHANGELOG refresh

- README Usage block now documents `deepseek resume <SESSION_ID>` and
  `deepseek fork <SESSION_ID>`. Both commands have existed since v0.7
  but were undiscoverable; #682 reported "no way to resume."
- New GitHub Actions for issue triage (#688):
    * triage.yml      — keyword-driven auto-labeller (bug / feat / docs /
                        question, area:* by file-path mention, os:*,
                        lang:zh on CJK titles). Only adds labels that
                        already exist on the repo so it can't create
                        noise unilaterally.
    * stale.yml       — 14 d stale → 7 d close on `needs-info` issues
                        only; PRs untouched; respects pinned/keep-open/
                        bug/security exemptions.
    * spam-lockdown.yml — auto-closes promotional issues from accounts
                          <30 days old. Pure github-script (no
                          third-party action) so the matching rules
                          stay readable.
- CHANGELOG (v0.8.12) updated: README install rewrite (#672), Scoop
  (#696), pricing extension (#692), Resume docs surface, and the
  cargo-install-on-stable fix from the previous commit. Lease
  "pending" caveat removed since it's now actually fixed.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.github/workflows/spam-lockdown.yml

@@ -0,0 +1,74 @@
+name: Lock down obvious spam issues
+
+on:
+  issues:
+    types: [opened]
+
+permissions:
+  issues: write
+
+jobs:
+  lockdown:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Auto-close spam patterns from new accounts
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const issue = context.payload.issue;
+            const author = issue.user;
+
+            // Only consider brand-new accounts. If the user has been around
+            // long enough to file good-faith issues elsewhere, don't touch.
+            const created = new Date(author.created_at || 0);
+            const ageDays = (Date.now() - created.getTime()) / 86_400_000;
+            if (ageDays > 30) return;
+
+            const blob = `${issue.title || ''}\n${issue.body || ''}`;
+            const patterns = [
+              /\bcrypto\b/i,
+              /\bairdrop\b/i,
+              /\bnft\b/i,
+              /\bpresale\b/i,
+              /\busdt\b/i,
+              /\btg\s*@/i,
+              /\btelegram\s+@/i,
+              /\bt\.me\//i,
+              /\bwhatsapp\s+\+/i,
+              /\bseo\s+service/i,
+              /\bguest\s+post/i,
+              /\bbacklink/i,
+              /\bbuy\s+followers/i,
+              /\bjoin\s+our\s+(community|server|group)/i,
+              /\bpromot[ei]\s+your\b/i,
+            ];
+            const hit = patterns.find(p => p.test(blob));
+            if (!hit) return;
+
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: issue.number,
+              body: [
+                'This issue was auto-closed because the title or body matches',
+                'a spam pattern (paid promotion / unrelated link) and the author',
+                'account is less than 30 days old. If this is a real bug or',
+                'feature request, please reopen with a clearer description',
+                '(in English or 中文) of the project-relevant context.',
+              ].join(' '),
+            });
+
+            await github.rest.issues.update({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: issue.number,
+              state: 'closed',
+              state_reason: 'not_planned',
+            });
+
+            await github.rest.issues.addLabels({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: issue.number,
+              labels: ['spam'],
+            }).catch(() => {});  // ignore if label doesn't exist yet

.github/workflows/stale.yml

@@ -0,0 +1,36 @@
+name: Close stale issues
+
+on:
+  schedule:
+    - cron: '17 5 * * *'   # daily, off-peak
+  workflow_dispatch: {}
+
+permissions:
+  issues: write
+  pull-requests: write
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v9
+        with:
+          days-before-stale: 14
+          days-before-close: 7
+          stale-issue-message: >
+            This issue has been inactive for 14 days while waiting on
+            additional information. It will close automatically in 7 days
+            unless someone responds. If you still need help, drop a
+            comment with the requested details and a maintainer can
+            reopen.
+          close-issue-message: >
+            Closing for inactivity. Feel free to comment to reopen if
+            you can share the requested information.
+          stale-issue-label: 'stale'
+          only-labels: 'needs-info'
+          exempt-issue-labels: 'pinned,keep-open,bug,security'
+          # Don't touch PRs — `actions/stale` defaults can be aggressive
+          # there. We only want it for `needs-info` issues.
+          days-before-pr-stale: -1
+          days-before-pr-close: -1
+          operations-per-run: 60

.github/workflows/triage.yml

@@ -0,0 +1,63 @@
+name: Issue triage
+
+on:
+  issues:
+    types: [opened, reopened]
+
+permissions:
+  issues: write
+  contents: read
+
+jobs:
+  label:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Auto-label by title and body
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const issue = context.payload.issue;
+            const title = (issue.title || '').toLowerCase();
+            const body = (issue.body || '').toLowerCase();
+            const text = `${title}\n${body}`;
+            const labels = new Set();
+
+            // Type
+            if (/\b(bug|crash|panic|broken|stack ?trace|regression|err(?:or)?|fail(?:ed|ure)?)\b/.test(text)) labels.add('bug');
+            if (/\b(feat(?:ure)?|request|enhancement|wishlist|proposal|please add|would be nice|support for)\b/.test(text)) labels.add('enhancement');
+            if (/\b(docs?|readme|documentation|typo|grammar|wording|spelling)\b/.test(text)) labels.add('documentation');
+            if (/\b(question|how (?:do|to)|why does|what does|is it possible)\b/.test(text)) labels.add('question');
+
+            // Locale — title contains CJK (Chinese, Japanese, Korean) characters
+            if (/[぀-ヿ㐀-鿿가-힯]/.test(issue.title || '')) labels.add('lang:zh');
+
+            // Areas (path-driven hints)
+            if (/crates\/tui|\btui\b|ratatui|composer|sidebar/.test(text)) labels.add('area:tui');
+            if (/crates\/core|engine|turn ?loop|agent ?loop/.test(text)) labels.add('area:core');
+            if (/crates\/mcp|\bmcp\b/.test(text)) labels.add('area:mcp');
+            if (/crates\/state|sqlite|sessions?|persistence/.test(text)) labels.add('area:state');
+            if (/crates\/execpolicy|approval|sandbox|seatbelt|landlock/.test(text)) labels.add('area:execpolicy');
+            if (/crates\/tools|tool[ _]call|tool[ _]registry/.test(text)) labels.add('area:tools');
+            if (/install|cargo install|npm install|scoop|homebrew|prebuilt|binary/.test(text)) labels.add('area:install');
+            if (/windows/.test(text)) labels.add('os:windows');
+            if (/macos|darwin|apple silicon/.test(text)) labels.add('os:macos');
+            if (/\blinux\b|ubuntu|debian|fedora|arch ?linux/.test(text)) labels.add('os:linux');
+
+            if (labels.size === 0) return;
+
+            // Only add labels that already exist on the repo to avoid creating noise.
+            const existing = await github.paginate(github.rest.issues.listLabelsForRepo, {
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              per_page: 100,
+            });
+            const existingNames = new Set(existing.map(l => l.name));
+            const toAdd = [...labels].filter(name => existingNames.has(name));
+            if (toAdd.length === 0) return;
+
+            await github.rest.issues.addLabels({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: issue.number,
+              labels: toAdd,
+            });