feat: interactive MCP console (mcpctl console <project>)

Ink-based TUI that shows exactly what an LLM sees through MCP.
Browse tools/resources/prompts, execute them, and see raw JSON-RPC
traffic in a protocol log. Supports gated session flow with
begin_session, raw JSON-RPC input, and session reconnect.

- McpSession class wrapping HTTP transport with typed methods
- 12 React/Ink components (header, protocol-log, menu, tool/resource/prompt views, etc.)
- 21 unit tests for McpSession against a mock MCP server
- Fish + Bash completions with project name argument
- bun compile with --external react-devtools-core

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

completions/mcpctl.bash

@@ -2,7 +2,7 @@ _mcpctl() {
   local cur prev words cword
   _init_completion || return
 
-  local commands="status login logout config get describe delete logs create edit apply backup restore mcp approve help"
+  local commands="status login logout config get describe delete logs create edit apply backup restore mcp console approve help"
   local project_commands="attach-server detach-server get describe delete logs create edit help"
   local global_opts="-v --version --daemon-url --direct --project -h --help"
   local resources="servers instances secrets templates projects users groups rbac prompts promptrequests"
@@ -91,6 +91,14 @@ _mcpctl() {
       return ;;
     mcp)
       return ;;
+    console)
+      # First arg is project name
+      if [[ $((cword - subcmd_pos)) -eq 1 ]]; then
+        local names
+        names=$(mcpctl get projects -o json 2>/dev/null | jq -r '.[][].name' 2>/dev/null)
+        COMPREPLY=($(compgen -W "$names" -- "$cur"))
+      fi
+      return ;;
     get|describe|delete)
       if [[ -z "$resource_type" ]]; then
         COMPREPLY=($(compgen -W "$resources" -- "$cur"))