release: bump all packages to 0.1.1, add PyPI metadata and CHANGELOG

- Add readme field to all three pyproject.toml files (populates PyPI description page)
- Bump versions to 0.1.1 and update behave-core pin in shell/text
- Update Install sections in root, BEHAVE-SHELL, and BEHAVE-TEXT READMEs to lead with pip install from PyPI
- Add CHANGELOG.md at project root (Keep-a-Changelog format)

BEHAVE-TEXT/README.md

@@ -19,8 +19,12 @@ is deliberately neutral: BEHAVE-TEXT observes actors, not adversaries.
 ## Install
 
 ```bash
-pip install -e ../core/ -e .
-# development:
+pip install behave-text
+```
+
+For local development:
+
+```bash
 pip install -e ../core/ -e ".[dev]"
 ```
 

BEHAVE-TEXT/pyproject.toml

@@ -4,12 +4,13 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "behave-text"
-version = "0.1.0"
+version = "0.1.1"
 description = "BEHAVE-TEXT — text/messaging-domain behavioral observation registry, layered on behave-core"
+readme = "README.md"
 requires-python = ">=3.11"
 license = { text = "GPL-3.0-or-later" }
 authors = [{ name = "ANTI" }]
-dependencies = ["pydantic>=2.6", "behave-core>=0.1.0"]
+dependencies = ["pydantic>=2.6", "behave-core>=0.1.1"]
 
 [project.optional-dependencies]
 dev = ["pytest>=8", "pytest-cov", "ruff"]