diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2b9b4f4..a7eab6f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,16 @@
 
 ## [Unreleased]
 
+## [0.3.5] - 2026-04-13
+
+### Added
+- `mark_pr_ready`: GraphQL `markPullRequestAsReady` mutation to remove draft status from a PR (REST API has no endpoint for this); includes private `graphql_connection` helper
+- `get_tree`: fetch recursive repo file tree via Git Trees API (`GET /repos/{owner}/{repo}/git/trees/{sha}`)
+- `get_file_content`: fetch a single file's content via Contents API with optional `ref` param
+- `list_all_pull_request_files`: paginated variant that collects all pages (100/page) until exhausted; original `list_pull_request_files` preserved for backward compat
+- `list_pull_request_review_comments`: fetch inline code review comments (`GET /pulls/{n}/comments`), distinct from issue comments
+- `list_pull_request_commits`: simplified variant (per_page: 100, no cache) for fleet validator stale-diff guard
+
 ## [0.3.4] - 2026-04-06
 
 ### Added
diff --git a/lib/legion/extensions/github/runners/contents.rb b/lib/legion/extensions/github/runners/contents.rb
index 9e03240..2553061 100644
--- a/lib/legion/extensions/github/runners/contents.rb
+++ b/lib/legion/extensions/github/runners/contents.rb
@@ -11,6 +11,13 @@ module Contents
           include Legion::Extensions::Github::Helpers::Client
           include Legion::Extensions::Github::Helpers::Cache
 
+          def get_file_content(owner:, repo:, path:, ref: nil, **)
+            params = ref ? { ref: ref } : {}
+            { result: connection(owner: owner, repo: repo, **).get(
+              "/repos/#{owner}/#{repo}/contents/#{path}", params
+            ).body }
+          end
+
           def commit_files(owner:, repo:, branch:, files:, message:, **)
             conn = connection(owner: owner, repo: repo, **)
 
diff --git a/lib/legion/extensions/github/runners/pull_requests.rb b/lib/legion/extensions/github/runners/pull_requests.rb
index dab25b2..0354e58 100644
--- a/lib/legion/extensions/github/runners/pull_requests.rb
+++ b/lib/legion/extensions/github/runners/pull_requests.rb
@@ -45,11 +45,36 @@ def merge_pull_request(owner:, repo:, pull_number:, commit_title: nil, merge_met
             { result: response.body }
           end
 
-          def list_pull_request_commits(owner:, repo:, pull_number:, per_page: 30, page: 1, **)
+          def list_pull_request_commits(owner:, repo:, pull_number:, per_page: 100, **)
+            { result: connection(owner: owner, repo: repo, **).get(
+              "/repos/#{owner}/#{repo}/pulls/#{pull_number}/commits", { per_page: per_page }
+            ).body }
+          end
+
+          def list_all_pull_request_files(owner:, repo:, pull_number:, **)
+            all_files = []
+            page = 1
+            per_page = 100
+
+            loop do
+              batch = connection(owner: owner, repo: repo, **).get(
+                "/repos/#{owner}/#{repo}/pulls/#{pull_number}/files",
+                { per_page: per_page, page: page }
+              ).body
+              all_files.concat(batch)
+              break if batch.size < per_page
+
+              page += 1
+            end
+
+            { result: all_files }
+          end
+
+          def list_pull_request_review_comments(owner:, repo:, pull_number:, per_page: 30, page: 1, **)
             params = { per_page: per_page, page: page }
-            { result: cached_get("github:repo:#{owner}/#{repo}:pulls:#{pull_number}:commits:#{page}:#{per_page}") do
-              connection(owner: owner, repo: repo, **).get("/repos/#{owner}/#{repo}/pulls/#{pull_number}/commits", params).body
-            end }
+            { result: connection(owner: owner, repo: repo, **).get(
+              "/repos/#{owner}/#{repo}/pulls/#{pull_number}/comments", params
+            ).body }
           end
 
           def list_pull_request_files(owner:, repo:, pull_number:, per_page: 30, page: 1, **)
@@ -72,8 +97,43 @@ def create_review(owner:, repo:, pull_number:, body:, comments: [], event: 'COMM
             { result: response.body }
           end
 
+          def mark_pr_ready(owner:, repo:, pull_number:, **)
+            pr_data = get_pull_request(owner: owner, repo: repo, pull_number: pull_number)
+            node_id = pr_data.dig(:result, 'node_id') || pr_data.dig(:result, :node_id)
+            return { success: false, reason: :no_node_id } unless node_id
+
+            query = <<~GRAPHQL
+              mutation {
+                markPullRequestAsReady(input: { pullRequestId: "#{node_id}" }) {
+                  pullRequest { id isDraft }
+                }
+              }
+            GRAPHQL
+
+            conn = graphql_connection(owner: owner, repo: repo)
+            response = conn.post('/graphql', { query: query })
+            errors = response.body['errors']
+            return { success: false, reason: :graphql_error, errors: errors } if errors&.any?
+
+            { success: true, result: response.body.dig('data', 'markPullRequestAsReady', 'pullRequest') }
+          end
+
           include Legion::Extensions::Helpers::Lex if Legion::Extensions.const_defined?(:Helpers, false) &&
                                                       Legion::Extensions::Helpers.const_defined?(:Lex, false)
+
+          private
+
+          def graphql_connection(owner: nil, repo: nil, **)
+            resolved = respond_to?(:resolve_credential, true) ? resolve_credential(owner: owner, repo: repo) : nil
+            resolved_token = resolved&.dig(:token)
+
+            Faraday.new(url: 'https://api.github.com') do |conn|
+              conn.request :json
+              conn.response :json, content_type: /\bjson$/
+              conn.headers['Accept'] = 'application/vnd.github+json'
+              conn.headers['Authorization'] = "Bearer #{resolved_token}" if resolved_token
+            end
+          end
         end
       end
     end
diff --git a/lib/legion/extensions/github/runners/repositories.rb b/lib/legion/extensions/github/runners/repositories.rb
index 041afde..cfe40b7 100644
--- a/lib/legion/extensions/github/runners/repositories.rb
+++ b/lib/legion/extensions/github/runners/repositories.rb
@@ -53,6 +53,15 @@ def list_tags(owner:, repo:, per_page: 30, page: 1, **)
             end }
           end
 
+          def get_tree(owner:, repo:, tree_sha:, recursive: true, **)
+            params = recursive ? { recursive: true } : {}
+            { result: cached_get("github:repo:#{owner}/#{repo}:tree:#{tree_sha}:#{recursive}") do
+              connection(owner: owner, repo: repo, **).get(
+                "/repos/#{owner}/#{repo}/git/trees/#{tree_sha}", params
+              ).body
+            end }
+          end
+
           include Legion::Extensions::Helpers::Lex if Legion::Extensions.const_defined?(:Helpers, false) &&
                                                       Legion::Extensions::Helpers.const_defined?(:Lex, false)
         end
diff --git a/lib/legion/extensions/github/version.rb b/lib/legion/extensions/github/version.rb
index 2cf1b02..be5cdc9 100644
--- a/lib/legion/extensions/github/version.rb
+++ b/lib/legion/extensions/github/version.rb
@@ -3,7 +3,7 @@
 module Legion
   module Extensions
     module Github
-      VERSION = '0.3.4'
+      VERSION = '0.3.5'
     end
   end
 end
diff --git a/spec/legion/extensions/github/runners/contents_spec.rb b/spec/legion/extensions/github/runners/contents_spec.rb
index d6b737d..c6cfb3d 100644
--- a/spec/legion/extensions/github/runners/contents_spec.rb
+++ b/spec/legion/extensions/github/runners/contents_spec.rb
@@ -13,6 +13,36 @@
 
   before { allow(client).to receive(:connection).and_return(test_connection) }
 
+  describe '#get_file_content' do
+    before do
+      stubs.get('/repos/octocat/Hello-World/contents/README.md') do
+        [200, { 'Content-Type' => 'application/json' },
+         { 'name' => 'README.md', 'path' => 'README.md',
+           'content' => 'SGVsbG8gV29ybGQ=', 'encoding' => 'base64', 'sha' => 'abc123' }]
+      end
+    end
+
+    it 'fetches file content from the GitHub Contents API' do
+      result = client.get_file_content(owner: 'octocat', repo: 'Hello-World', path: 'README.md')
+      expect(result[:result]).to be_a(Hash)
+      expect(result[:result]['path']).to eq('README.md')
+    end
+
+    it 'wraps the response under :result' do
+      result = client.get_file_content(owner: 'octocat', repo: 'Hello-World', path: 'README.md')
+      expect(result).to have_key(:result)
+    end
+
+    it 'accepts a ref parameter' do
+      stubs.get('/repos/octocat/Hello-World/contents/README.md') do |env|
+        expect(env.params['ref']).to eq('main')
+        [200, { 'Content-Type' => 'application/json' },
+         { 'path' => 'README.md', 'sha' => 'abc123' }]
+      end
+      client.get_file_content(owner: 'octocat', repo: 'Hello-World', path: 'README.md', ref: 'main')
+    end
+  end
+
   describe '#commit_files' do
     let(:commit_sha) { 'commit111' }
     let(:base_tree_sha) { 'tree222' }
diff --git a/spec/legion/extensions/github/runners/labels_spec.rb b/spec/legion/extensions/github/runners/labels_spec.rb
index f79bc2a..36a6243 100644
--- a/spec/legion/extensions/github/runners/labels_spec.rb
+++ b/spec/legion/extensions/github/runners/labels_spec.rb
@@ -81,4 +81,28 @@
       expect(result[:result]).to be true
     end
   end
+
+  describe 'fleet method contract verification' do
+    it 'has add_labels_to_issue (not add_labels)' do
+      expect(client).to respond_to(:add_labels_to_issue)
+    end
+
+    it 'does not have a bare add_labels method' do
+      expect(client).not_to respond_to(:add_labels)
+    end
+
+    it 'accepts issue_number: keyword (not number:)' do
+      stubs.post('/repos/octocat/Hello-World/issues/42/labels') do
+        [200, { 'Content-Type' => 'application/json' }, [{ 'name' => 'fleet:received' }]]
+      end
+      result = client.add_labels_to_issue(
+        owner: 'octocat', repo: 'Hello-World', issue_number: 42, labels: ['fleet:received']
+      )
+      expect(result[:result]).to be_an(Array)
+    end
+
+    it 'has remove_label_from_issue' do
+      expect(client).to respond_to(:remove_label_from_issue)
+    end
+  end
 end
diff --git a/spec/legion/extensions/github/runners/pull_requests_spec.rb b/spec/legion/extensions/github/runners/pull_requests_spec.rb
index bb23553..8a88c80 100644
--- a/spec/legion/extensions/github/runners/pull_requests_spec.rb
+++ b/spec/legion/extensions/github/runners/pull_requests_spec.rb
@@ -88,6 +88,119 @@
     end
   end
 
+  describe '#mark_pr_ready' do
+    let(:graphql_stubs) { Faraday::Adapter::Test::Stubs.new }
+    let(:graphql_conn) do
+      Faraday.new(url: 'https://api.github.com') do |conn|
+        conn.request :json
+        conn.response :json, content_type: /\bjson$/
+        conn.adapter :test, graphql_stubs
+      end
+    end
+
+    before do
+      stubs.get('/repos/octocat/Hello-World/pulls/42') do
+        [200, { 'Content-Type' => 'application/json' },
+         { 'number' => 42, 'node_id' => 'PR_abc123', 'draft' => true }]
+      end
+      conn = graphql_conn # force evaluation before mocking Faraday.new
+      allow(Faraday).to receive(:new).with(url: 'https://api.github.com').and_return(conn)
+      graphql_stubs.post('/graphql') do
+        [200, { 'Content-Type' => 'application/json' },
+         { 'data' => { 'markPullRequestAsReady' => {
+           'pullRequest' => { 'id' => 'PR_abc123', 'isDraft' => false }
+         } } }]
+      end
+    end
+
+    it 'returns success: true when the mutation succeeds' do
+      result = client.mark_pr_ready(owner: 'octocat', repo: 'Hello-World', pull_number: 42)
+      expect(result[:success]).to be true
+    end
+
+    it 'returns the PR data from the mutation' do
+      result = client.mark_pr_ready(owner: 'octocat', repo: 'Hello-World', pull_number: 42)
+      expect(result[:result]['isDraft']).to be false
+    end
+  end
+
+  describe '#list_all_pull_request_files' do
+    let(:page1) { (1..100).map { |i| { 'filename' => "file#{i}.rb" } } }
+    let(:page2) { [{ 'filename' => 'file101.rb' }] }
+
+    before do
+      stubs.get('/repos/octocat/Hello-World/pulls/42/files') do |env|
+        page = env.params['page'].to_i
+        data = page == 1 ? page1 : page2
+        [200, { 'Content-Type' => 'application/json' }, data]
+      end
+    end
+
+    it 'fetches all pages until a page has fewer than per_page results' do
+      result = client.list_all_pull_request_files(owner: 'octocat', repo: 'Hello-World', pull_number: 42)
+      expect(result[:result].size).to eq(101)
+    end
+
+    it 'handles a single page of results' do
+      single_stubs = Faraday::Adapter::Test::Stubs.new
+      single_conn = Faraday.new(url: 'https://api.github.com') do |conn|
+        conn.request :json
+        conn.response :json, content_type: /\bjson$/
+        conn.adapter :test, single_stubs
+      end
+      allow(client).to receive(:connection).and_return(single_conn)
+      single_stubs.get('/repos/octocat/Hello-World/pulls/42/files') do
+        [200, { 'Content-Type' => 'application/json' }, [{ 'filename' => 'only.rb' }]]
+      end
+      result = client.list_all_pull_request_files(owner: 'octocat', repo: 'Hello-World', pull_number: 42)
+      expect(result[:result].size).to eq(1)
+    end
+  end
+
+  describe '#list_pull_request_commits' do
+    before do
+      stubs.get('/repos/octocat/Hello-World/pulls/42/commits') do
+        [200, { 'Content-Type' => 'application/json' },
+         [{ 'sha' => 'abc123', 'commit' => { 'message' => 'Fix timeout' } },
+          { 'sha' => 'def456', 'commit' => { 'message' => 'Add config param' } }]]
+      end
+    end
+
+    it 'returns commits for a PR' do
+      result = client.list_pull_request_commits(owner: 'octocat', repo: 'Hello-World', pull_number: 42)
+      expect(result[:result]).to be_an(Array)
+      expect(result[:result].size).to eq(2)
+    end
+
+    it 'returns commit SHAs' do
+      result = client.list_pull_request_commits(owner: 'octocat', repo: 'Hello-World', pull_number: 42)
+      shas = result[:result].map { |c| c['sha'] }
+      expect(shas).to eq(%w[abc123 def456])
+    end
+  end
+
+  describe '#list_pull_request_review_comments' do
+    before do
+      stubs.get('/repos/octocat/Hello-World/pulls/42/comments') do
+        [200, { 'Content-Type' => 'application/json' },
+         [{ 'id' => 1, 'body' => 'Nit: rename this', 'path' => 'lib/foo.rb',
+            'position' => 3, 'user' => { 'login' => 'reviewer' }, 'created_at' => '2026-04-01T00:00:00Z' }]]
+      end
+    end
+
+    it 'returns review comments for a PR' do
+      result = client.list_pull_request_review_comments(owner: 'octocat', repo: 'Hello-World', pull_number: 42)
+      expect(result[:result]).to be_an(Array)
+    end
+
+    it 'includes comment body and path' do
+      result = client.list_pull_request_review_comments(owner: 'octocat', repo: 'Hello-World', pull_number: 42)
+      comment = result[:result].first
+      expect(comment['body']).to eq('Nit: rename this')
+      expect(comment['path']).to eq('lib/foo.rb')
+    end
+  end
+
   describe '#create_review' do
     it 'posts a COMMENT review with body and no inline comments' do
       stubs.post('/repos/octocat/Hello-World/pulls/42/reviews') do
diff --git a/spec/legion/extensions/github/runners/repositories_spec.rb b/spec/legion/extensions/github/runners/repositories_spec.rb
index f288f02..734ee72 100644
--- a/spec/legion/extensions/github/runners/repositories_spec.rb
+++ b/spec/legion/extensions/github/runners/repositories_spec.rb
@@ -56,6 +56,29 @@
     end
   end
 
+  describe '#get_tree' do
+    before do
+      stubs.get('/repos/octocat/Hello-World/git/trees/main') do
+        [200, { 'Content-Type' => 'application/json' },
+         { 'sha' => 'abc123', 'tree' => [
+           { 'path' => 'lib/main.rb', 'type' => 'blob', 'sha' => 'aaa' },
+           { 'path' => 'spec', 'type' => 'tree', 'sha' => 'bbb' }
+         ], 'truncated' => false }]
+      end
+    end
+
+    it 'returns the tree for a given sha/ref' do
+      result = client.get_tree(owner: 'octocat', repo: 'Hello-World', tree_sha: 'main')
+      expect(result[:result]['tree']).to be_an(Array)
+      expect(result[:result]['tree'].first['path']).to eq('lib/main.rb')
+    end
+
+    it 'wraps the response under :result' do
+      result = client.get_tree(owner: 'octocat', repo: 'Hello-World', tree_sha: 'main')
+      expect(result).to have_key(:result)
+    end
+  end
+
   describe 'scope-aware connection' do
     it 'forwards owner and repo to connection for credential resolution' do
       expect(client).to receive(:connection)