Codex CLI 0.26.0 allalaadimine

Highlights:
New Features
- Custom /prompts loaded from ~/.codex/prompts (#2696)
- New "View Image" tool to let Codex agentically view local images (#2723)
- MCP GetConfig endpoint to inspect resolved settings (#2725)
TUI
- Fix image pasting in Windows + improve burst paste handling (#2683)
- Prevent slash commands during an active task (#2792)
- Fix cursor position when suspending (^Z) (#2690)
- Reduce doubled lines and hanging list markers (#2789)
Docs & Templates
- Major README/docs refactor and navigation (#2724)
- CHANGELOG now points to Releases page (#2780)
- Add VS Code Extension issue template (#2853)
Full list of merged PRs:
- #2864 Fix CI release build
- #2747 Bug fix: clone of incoming_tx can lead to deadlock
- #2852 Following up on #2371 post commit feedback
- #2696 Custom /prompts
- #2762 UI: Make slash commands bold in welcome message
- #2737 Changed OAuth success screen to use the string "Codex" rather than "Codex CLI"
- #2853 Add a VS Code Extension issue template
- #2683 burst paste edge cases
- #2746 Race condition in compact
- #2849 chore: print stderr from MCP server to test output using eprintln!
- #2848 chore: try to make it easier to debug the flakiness of test_shell_command_approval_triggers_elicitation
- #2845 chore: require uninlined_format_args from clippy
- #2792 disallow some slash commands while a task is running
- #2723 Add "View Image" tool
- #2690 fix cursor after suspend
- #2789 fix (most) doubled lines and hanging list markers
- #2780 Point the CHANGELOG to the releases page
- #2778 Added back codex-rs/config.md to link to new location
- #2724 README / docs refactor
- #2776 fix: for now, limit the number of deltas sent back to the UI
- #2725 [mcp-server] Add GetConfig endpoint