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"))

completions/mcpctl.fish

@@ -3,7 +3,7 @@
 # Erase any stale completions from previous versions
 complete -c mcpctl -e
 
-set -l commands status login logout config get describe delete logs create edit apply patch backup restore mcp approve help
+set -l commands status login logout config get describe delete logs create edit apply patch backup restore mcp console approve help
 set -l project_commands attach-server detach-server get describe delete logs create edit help
 
 # Disable file completions by default
@@ -162,6 +162,7 @@ complete -c mcpctl -n "not __mcpctl_has_project; and not __fish_seen_subcommand_
 complete -c mcpctl -n "not __mcpctl_has_project; and not __fish_seen_subcommand_from $commands" -a backup -d 'Backup configuration'
 complete -c mcpctl -n "not __mcpctl_has_project; and not __fish_seen_subcommand_from $commands" -a restore -d 'Restore from backup'
 complete -c mcpctl -n "not __mcpctl_has_project; and not __fish_seen_subcommand_from $commands" -a patch -d 'Patch a resource field'
+complete -c mcpctl -n "not __mcpctl_has_project; and not __fish_seen_subcommand_from $commands" -a console -d 'Interactive MCP console'
 complete -c mcpctl -n "not __mcpctl_has_project; and not __fish_seen_subcommand_from $commands" -a approve -d 'Approve a prompt request'
 complete -c mcpctl -n "not __mcpctl_has_project; and not __fish_seen_subcommand_from $commands" -a help -d 'Show help'
 
@@ -318,6 +319,28 @@ end
 complete -c mcpctl -n "__fish_seen_subcommand_from approve; and __mcpctl_approve_needs_type" -a 'promptrequest' -d 'Resource type'
 complete -c mcpctl -n "__fish_seen_subcommand_from approve; and __mcpctl_approve_needs_name" -a '(__mcpctl_promptrequest_names)' -d 'Prompt request name'
 
+# console: takes a project name as first argument
+function __mcpctl_console_needs_project
+    set -l tokens (commandline -opc)
+    set -l found false
+    for tok in $tokens
+        if $found
+            if not string match -q -- '-*' $tok
+                return 1 # project arg already present
+            end
+        end
+        if test "$tok" = "console"
+            set found true
+        end
+    end
+    if $found
+        return 0 # console found but no project yet
+    end
+    return 1
+end
+
+complete -c mcpctl -n "__fish_seen_subcommand_from console; and __mcpctl_console_needs_project" -a '(__mcpctl_project_names)' -d 'Project name'
+
 # apply takes a file
 complete -c mcpctl -n "__fish_seen_subcommand_from apply" -s f -l file -d 'Configuration file' -rF
 complete -c mcpctl -n "__fish_seen_subcommand_from apply" -F