feat: add smart intent context injector & lightweight CLI

[shatinz]

Description

Integrates a lightweight intent router and context injector (

Write the minimum code needed to deliver maximum value.
Favor standard library solutions over heavy third-party dependencies.
Automate verification: every change must be proven with a runnable check.
Prevent premature abstractions: clean composition beats speculative architecture.) to stream ponytail's senior-developer thinking heuristics into prompt context for AI coding agents.

Features

• Intent-based heuristic filtering
• Standardized output formats ()
• Zero external dependencies (pure Python 3 stdlib)