fix: add readme field to integration pyproject.toml files for PyPI (#634)

PyPI was not displaying package READMEs because the `readme` field
was missing from pyproject.toml. Hatchling requires this to be
explicitly declared. Fixes langgraph, agno, hermes, and pydantic-ai.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

hindsight-integrations/agno/pyproject.toml

@@ -2,6 +2,7 @@
 name = "hindsight-agno"
 version = "0.4.19"
 description = "Agno integration for Hindsight - persistent memory tools for AI agents"
+readme = "README.md"
 requires-python = ">=3.10"
 license = { text = "MIT" }
 authors = [

hindsight-integrations/hermes/pyproject.toml

@@ -2,6 +2,7 @@
 name = "hindsight-hermes"
 version = "0.4.19"
 description = "Hermes agent integration for Hindsight - persistent memory tools for AI agents"
+readme = "README.md"
 requires-python = ">=3.10"
 license = { text = "MIT" }
 authors = [

hindsight-integrations/langgraph/pyproject.toml

@@ -2,6 +2,7 @@
 name = "hindsight-langgraph"
 version = "0.1.1"
 description = "LangGraph integration for Hindsight - persistent memory tools, nodes, and store for AI agents"
+readme = "README.md"
 requires-python = ">=3.10"
 license = { text = "MIT" }
 authors = [

hindsight-integrations/pydantic-ai/pyproject.toml

@@ -2,6 +2,7 @@
 name = "hindsight-pydantic-ai"
 version = "0.4.19"
 description = "Pydantic AI integration for Hindsight - persistent memory tools for AI agents"
+readme = "README.md"
 requires-python = ">=3.10"
 license = { text = "MIT" }
 authors = [