chore(release): 1.3.0

Version sync in every file that carries it: pyproject.toml, __init__.py,
tests/test_smoke.py, README (status heading, its anchor, the wheel command),
uv.lock and a new CHANGELOG section. No tag.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -23,7 +23,7 @@ review, test and judgement before anything ships.*
 A short visual introduction — 12 slides, in Norwegian, for a general audience — ships with the
 repo: open [docs/kort-presentasjon.html](docs/kort-presentasjon.html) in any browser.
 
-## Status - v1.2.0
+## Status - v1.3.0
 
 **What v1 is.** The whole chain runs offline, end to end (`portfolio-optimiser-demo`), and the
 run-path steps the chain is built on are callable from outside the framework as plain commands with
@@ -48,7 +48,7 @@ holds, not that the model reasons well.
 
 ## Table of Contents
 
-- [Status - v1.2.0](#status---v120)
+- [Status - v1.3.0](#status---v130)
 - [Install](#install)
 - [Walk the whole chain offline](#walk-the-whole-chain-offline)
 - [Looking things up during a run: the `okf` server](#looking-things-up-during-a-run-the-okf-server)
@@ -88,7 +88,7 @@ that does not travel with wheel metadata — so the wheel names `llm-ingestion-o
 alongside the wheel (measured: 65 packages, exit 0):
 
 ```bash
-uv pip install portfolio_optimiser-1.2.0-py3-none-any.whl \
+uv pip install portfolio_optimiser-1.3.0-py3-none-any.whl \
   "llm-ingestion-okf @ git+https://git.fromaitochitta.com/open/llm-ingestion-okf.git@v0.3.2" \
   "llm-ingestion-guard @ git+https://git.fromaitochitta.com/open/llm-ingestion-pipeline-security.git@v0.3.4"
 ```