Add Telegram file upload directive

.codex/skills/telegram-file/SKILL.md

@@ -0,0 +1,24 @@
+---
+name: telegram-file
+description: Use when Codex should send, show, upload, or share a local non-image file into the Telegram chat through the bot without calling Telegram tools.
+metadata:
+  short-description: Send Telegram files from assistant output
+---
+
+# Telegram File
+
+When asked to send/show/upload/share a local file in Telegram, emit a file directive in normal assistant output. The bot strips the directive and sends the file as a Telegram document.
+
+Use exactly one directive line per file, outside code fences:
+
+`<!-- telegram-file {"path":"<absolute-local-file-path>","caption":"<optional caption>"} -->`
+
+Rules:
+- Replace `<absolute-local-file-path>` with an absolute path that the bot container can read.
+- The source file may live anywhere on the host, but the bot runs in Docker; before emitting the directive, make sure the file is inside a workspace under the configured playground base directory or another path explicitly mounted into the bot container.
+- If the file is outside container-visible paths, copy it into an appropriate workspace-local location first, then use the copied file's absolute path in the directive.
+- Do not hardcode machine-specific directories, user names, repository paths, workspace names, or sample filenames in this skill.
+- Use `telegram-photo` instead for image files that should appear as Telegram photos rather than generic documents.
+- `caption` is optional and should be short; omit the `caption` field when no caption is needed.
+- Do not use external Telegram tool calls for this.
+- If no usable container-visible file path is known, ask for the path or explain what local file is needed.