---

This section details on the original issue you should resolve

<issue_title>Add concrete examples to all --help screens</issue_title>
<issue_description>Parent: #1534

Problem

No --help screen in Dev Proxy includes concrete usage examples. Every command shows only option descriptions. For example, jwt create --help shows:

--claims    Claims to add to the token. Specify once for each claim in the format "name:value".

But an agent doesn't know whether to write:

• --claims "name:value"
• --claims name:value
• --claims name:value --claims other:value
• --claims name:value other:value

An example removes all ambiguity instantly.

Rationale

AI agents pattern-match from examples more reliably than from abstract flag descriptions. Research on LLM tool use consistently shows that concrete invocation examples are the highest-signal input for correct command composition. This is the single highest-ROI change for agent discoverability.

Proposed solution

Add 3-5 examples to each command's --help output using System.CommandLine's AddHelpText or equivalent mechanism.

Root command

Examples:
  devproxy                                            Start with default config
  devproxy -c myconfig.json                           Start with custom config
  devproxy -u "https://api.example.com/*"             Watch specific URLs
  devproxy --port 9000 --record                       Custom port, record requests
  devproxy --output json                              JSON output for scripts/agents

cert

Examples:
  devproxy cert ensure                                Install and trust certificate
  devproxy cert remove --force                        Remove certificate (no prompt)

config

Examples:
  devproxy config new                                 Create default devproxyrc.json
  devproxy config new myconfig.json                   Create named config file
  devproxy config get <config-id>                     Download config from gallery
  devproxy config open                                Open config in default editor

jwt create

Examples:
  devproxy jwt create                                 Create token with defaults
  devproxy jwt create -n "John Doe" -r admin -r user  Token with name and roles
  devproxy jwt create -s "read" -s "write" -a myapp   Token with scopes/audience
  devproxy jwt create --claims "dept:eng" --claims "level:5"  Custom claims

stdio

Examples:
  devproxy stdio npx -y @devproxy/mcp                 Proxy MCP server stdio
  devproxy stdio node server.js                        Proxy Node.js app stdio
  devproxy stdio -c myconfig.json node app.js          With custom config

outdated

Examples:
  devproxy outdated                                   Check for updates (human output)
  devproxy outdated --short                           Version number only

Affected code

• All files in DevProxy/Commands/ — add help text examples to each command
  </issue_description>

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