Add issue dependency tools for blocked-by relationships

Adds two new tools for managing issue dependencies via GitHub's
blocked-by API:

- issue_dependency_read: Get issues that block a given issue
- issue_dependency_write: Add or remove blocked-by relationships

Uses raw REST calls since go-github doesn't yet support the
/dependencies/blocked_by endpoints.

Author: eshaffer321

README.md

@@ -808,6 +808,30 @@ The following sets of tools are available:
   - `owner`: Repository owner (username or organization name) (string, required)
   - `repo`: Repository name (string, required)
 
+- **issue_dependency_read** - Get issue dependencies
+  - **Required OAuth Scopes**: `repo`
+  - `issue_number`: The number of the issue (number, required)
+  - `method`: The read operation to perform on issue dependencies.
+    Options are:
+    - 'get_blocked_by' - Get the list of issues that block this issue.
+     (string, required)
+  - `owner`: Repository owner (string, required)
+  - `page`: Page number for pagination (min 1) (number, optional)
+  - `perPage`: Results per page for pagination (min 1, max 100) (number, optional)
+  - `repo`: Repository name (string, required)
+
+- **issue_dependency_write** - Manage issue dependencies
+  - **Required OAuth Scopes**: `repo`
+  - `blocking_issue_id`: The ID (not number) of the issue that blocks this issue (number, required)
+  - `issue_number`: The number of the issue that is blocked (number, required)
+  - `method`: The action to perform on issue dependencies.
+    Options are:
+    - 'add' - Add a 'blocked by' relationship, indicating this issue is blocked by another issue.
+    - 'remove' - Remove a 'blocked by' relationship.
+     (string, required)
+  - `owner`: Repository owner (string, required)
+  - `repo`: Repository name (string, required)
+
 - **issue_read** - Get issue details
   - **Required OAuth Scopes**: `repo`
   - `issue_number`: The number of the issue (number, required)

pkg/github/__toolsnaps__/issue_dependency_read.snap

@@ -0,0 +1,49 @@
+{
+  "annotations": {
+    "readOnlyHint": true,
+    "title": "Get issue dependencies"
+  },
+  "description": "Get information about issue dependencies, such as which issues block this issue.",
+  "inputSchema": {
+    "properties": {
+      "issue_number": {
+        "description": "The number of the issue",
+        "type": "number"
+      },
+      "method": {
+        "description": "The read operation to perform on issue dependencies.\nOptions are:\n- 'get_blocked_by' - Get the list of issues that block this issue.\n",
+        "enum": [
+          "get_blocked_by"
+        ],
+        "type": "string"
+      },
+      "owner": {
+        "description": "Repository owner",
+        "type": "string"
+      },
+      "page": {
+        "description": "Page number for pagination (min 1)",
+        "minimum": 1,
+        "type": "number"
+      },
+      "perPage": {
+        "description": "Results per page for pagination (min 1, max 100)",
+        "maximum": 100,
+        "minimum": 1,
+        "type": "number"
+      },
+      "repo": {
+        "description": "Repository name",
+        "type": "string"
+      }
+    },
+    "required": [
+      "method",
+      "owner",
+      "repo",
+      "issue_number"
+    ],
+    "type": "object"
+  },
+  "name": "issue_dependency_read"
+}

pkg/github/__toolsnaps__/issue_dependency_write.snap

@@ -0,0 +1,43 @@
+{
+  "annotations": {
+    "title": "Manage issue dependencies"
+  },
+  "description": "Manage issue dependencies by adding or removing 'blocked by' relationships between issues.",
+  "inputSchema": {
+    "properties": {
+      "blocking_issue_id": {
+        "description": "The ID (not number) of the issue that blocks this issue",
+        "type": "number"
+      },
+      "issue_number": {
+        "description": "The number of the issue that is blocked",
+        "type": "number"
+      },
+      "method": {
+        "description": "The action to perform on issue dependencies.\nOptions are:\n- 'add' - Add a 'blocked by' relationship, indicating this issue is blocked by another issue.\n- 'remove' - Remove a 'blocked by' relationship.\n",
+        "enum": [
+          "add",
+          "remove"
+        ],
+        "type": "string"
+      },
+      "owner": {
+        "description": "Repository owner",
+        "type": "string"
+      },
+      "repo": {
+        "description": "Repository name",
+        "type": "string"
+      }
+    },
+    "required": [
+      "method",
+      "owner",
+      "repo",
+      "issue_number",
+      "blocking_issue_id"
+    ],
+    "type": "object"
+  },
+  "name": "issue_dependency_write"
+}

pkg/github/helper_test.go

@@ -62,6 +62,11 @@ const (
 	DeleteReposIssuesSubIssueByOwnerByRepoByIssueNumber         = "DELETE /repos/{owner}/{repo}/issues/{issue_number}/sub_issue"
 	PatchReposIssuesSubIssuesPriorityByOwnerByRepoByIssueNumber = "PATCH /repos/{owner}/{repo}/issues/{issue_number}/sub_issues/priority"
 
+	// Issue dependency endpoints
+	GetReposIssuesDependenciesBlockedByByOwnerByRepoByIssueNumber              = "GET /repos/{owner}/{repo}/issues/{issue_number}/dependencies/blocked_by"
+	PostReposIssuesDependenciesBlockedByByOwnerByRepoByIssueNumber             = "POST /repos/{owner}/{repo}/issues/{issue_number}/dependencies/blocked_by"
+	DeleteReposIssuesDependenciesBlockedByByOwnerByRepoByIssueNumberByIssueID  = "DELETE /repos/{owner}/{repo}/issues/{issue_number}/dependencies/blocked_by/{issue_id}"
+
 	// Pull request endpoints
 	GetReposPullsByOwnerByRepo                                = "GET /repos/{owner}/{repo}/pulls"
 	GetReposPullsByOwnerByRepoByPullNumber                    = "GET /repos/{owner}/{repo}/pulls/{pull_number}"