feat: add resource connect command and simplify CLI surface

[rishikesh-major]

Summary

• Adds major resource connect <resourceId> [resourceId...] command for per-user OAuth authentication via browser
• Removes machine-oriented subcommands that are now handled via web UI or MCP tools: resource list, resource add, resource remove, resource env-list, app deploy-status
• Removes non-interactive flags (--json, --id, --no-wait) from org list, org select, resource env, app info, and app deploy
• Simplifies app info to only display the application ID
• Simplifies app start by removing the behind-remote check
• Updates all plugin skill docs and troubleshooting guides to reflect the reduced CLI surface
• Adds AuthMode field to ResourceItem struct and per-user OAuth handling to Google Calendar and list-resources skills

Changes

Area	What
cmd/resource/connect.go	New connect subcommand — opens /connect page in browser with resource IDs and optional environment
cmd/resource/resource.go	Register connectCmd, remove listCmd, addCmd, removeCmd, envListCmd
cmd/resource/{list,add,remove,env_list}.go	Deleted
cmd/resource/env.go	Remove --id flag (interactive only now)
cmd/app/deploy.go	Remove --no-wait flag and non-TTY simple polling fallback
cmd/app/deploy_status.go	Deleted
cmd/app/info.go	Simplified to only print application ID; remove --json flag and API call
cmd/app/start.go	Remove IsBehindRemote check
cmd/org/list.go	Remove --json flag
cmd/org/select.go	Remove --id flag (interactive only now)
clients/api/client.go	Remove GetApplicationInfo method
clients/api/structs.go	Add AuthMode to ResourceItem; remove GetApplicationInfoResponse
clients/git/client.go	Remove IsBehindRemote function
utils/resources.go	Inline ResolveResourceItems into caller; unexport detectFramework
plugins/major/skills/major/	Update SKILL.md and all docs to reflect removed commands/flags
plugins/shared/skills/resources_googlecalendar/	Add per-user OAuth flow using resource connect
plugins/shared/skills/resources_list-resources/	Add Step 3 for per-user OAuth handling

Context

Companion to major-technology/mono-builder#1014. This slims down the CLI to its interactive-first surface — commands that were added for programmatic/AI use (resource list, resource add --id, org select --id, deploy-status, etc.) are removed in favor of MCP tools and the web UI. The new resource connect command fills the gap for per-user OAuth flows in CLI environments.

Test plan

• go build ./... succeeds
• go run main.go resource connect --help shows correct usage and flags
• Manual: verify browser opens to correct /connect URL with resource IDs and environment ID
• Verify removed subcommands are no longer available (resource list, resource add, etc.)

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