chore(release): v0.13.0-rc1

Bump pyproject version, __version__, and the test_smoke assertion to
0.13.0rc1 ahead of the rc tag push per RELEASING.md. AGENTS.md is
regenerated to pick up the new version in its header line; uv.lock
refreshed because the package's own version changed.

CHANGELOG flips [Unreleased] to [0.13.0] with today's date and a
headline paragraph summarizing the LLM-provider hardening cycle: the
typed LlmCompletionEvent / LlmFailedEvent variants (0049 + 0058), the
0057 request-side field extension, the sentinel-namespace retirement,
and 0047 prefix-cache wire-byte stability. The empty [Unreleased]
heading is restored above it.

After this PR merges, push the v0.13.0-rc1 tag from a freshly pulled
main; the release workflow routes -rc tags to TestPyPI.

Author: chris-colinsky

CHANGELOG.md

@@ -6,6 +6,10 @@ The format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/). The
 
 ## [Unreleased]
 
+## [0.13.0] — 2026-06-09
+
+LLM provider hardening release. The pinned spec advances from v0.46.0 to v0.53.0, absorbing four implemented proposals. Proposal 0049 introduces the first spec-normatively-typed observer event variant, `LlmCompletionEvent`, dispatched on every successful LLM provider call; proposal 0058 adds the failure-side counterpart, `LlmFailedEvent`; proposal 0057 extends the completion variant with eight request-side fields. The bundled `OpenAIProvider` retires its sentinel-namespace `NodeEvent` emission for LLM calls entirely, and the OTel and Langfuse observers now drive their LLM span / Generation from the typed events with back-dated timestamps so durations reflect the adapter boundary. Proposal 0047 closes implicit prefix-cache wire-byte stability: `Response.usage` gains cache-stat fields, the OTel observer emits `openarmature.llm.cache_read` attributes, and the OpenAI Chat Completions request body is byte-stable across equivalent inputs regardless of dict insertion order. Custom observers that filtered LLM calls by sentinel namespace MUST migrate to `isinstance` discrimination; `LLM_NAMESPACE` and `LlmEventPayload` remain as a documented compatibility surface.
+
 ### Added
 
 - **Implicit prefix-cache wire-byte stability** (proposal 0047, spec v0.39.0). Closes proposal 0047 end-to-end across three pieces all landing in v0.13.0: (1) `Response.usage.cached_tokens` / `cache_creation_tokens` fields sourced from the OpenAI `prompt_tokens_details` payload (PR #136); (2) the OTel observer emits `openarmature.llm.cache_read.input_tokens` and optional `openarmature.llm.cache_creation.input_tokens` when the corresponding usage field is populated (PR #140); (3) the OpenAI Chat Completions wire body is now byte-stable across equivalent OA inputs — equivalent calls produce byte-identical request bodies regardless of dict insertion order at every user-supplied-dict boundary (tool definitions including the top-level `function` record + the `parameters` JSON Schema, `response_format.json_schema.schema`, `RuntimeConfig` extras, `tool_call.arguments` JSON encoding) via a new `_canonicalize_dict_keys` helper that recursively sorts dict keys at every nesting level while preserving caller-supplied array ordering, plus a top-level belt-and-suspenders canonicalization pass over the assembled body (PR #145). Prompt-management §13 *Cross-variable substring stability* is satisfied by the existing Jinja2 `StrictUndefined` render path; pinned by a new test. Scope is the Chat Completions endpoint only — the OpenAI Responses API endpoint and the Anthropic / Gemini wire-format mappings are deferred (the providers aren't implemented in python today).

pyproject.toml

@@ -9,7 +9,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "openarmature"
-version = "0.12.0"
+version = "0.13.0rc1"
 description = "Workflow framework for LLM pipelines and tool-calling agents."
 readme = "README.md"
 requires-python = ">=3.12"

src/openarmature/AGENTS.md

@@ -1,6 +1,6 @@
 # OpenArmature — Agent documentation
 
-*This is the agent guide bundled with the openarmature Python package, version 0.12.0 (spec v0.53.0). For the full docs site see [openarmature.ai](https://openarmature.ai). For the canonical spec text see [openarmature.org/capabilities](https://openarmature.org/capabilities/). For project-specific conventions for the code you're editing, see the host project's `AGENTS.md` or `CLAUDE.md`.*
+*This is the agent guide bundled with the openarmature Python package, version 0.13.0rc1 (spec v0.53.0). For the full docs site see [openarmature.ai](https://openarmature.ai). For the canonical spec text see [openarmature.org/capabilities](https://openarmature.org/capabilities/). For project-specific conventions for the code you're editing, see the host project's `AGENTS.md` or `CLAUDE.md`.*
 
 ## TL;DR
 

src/openarmature/__init__.py

@@ -24,7 +24,7 @@
    sessions opening the project find the bundled docs automatically.
 """
 
-__version__ = "0.12.0"
+__version__ = "0.13.0rc1"
 __spec_version__ = "0.53.0"
 # Proposal 0052 (spec observability §5.1 / §8.4.1): canonical
 # package-registry name for this implementation. Surfaces on every

tests/test_smoke.py

@@ -8,7 +8,7 @@
 
 
 def test_package_versions() -> None:
-    assert openarmature.__version__ == "0.12.0"
+    assert openarmature.__version__ == "0.13.0rc1"
     assert openarmature.__spec_version__ == "0.53.0"