Release 0.1.8: the version the docs quote, too

The three declarations CI checks are not the only copies. The cookbook quotes
the version it was verified against, and the serving chapter embeds it in two
`/health` payloads that `tests/test_cookbook_serving.py` byte-compares against
real output — so a bump that stops at pyproject, `__init__` and the lockfile
fails those tests, which is what it should do. The README's footer carries it
as well.

Found by CI on the release PR rather than by looking, which is the right way
round: the checks exist so the bump cannot be two-thirds done.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: Shashankss1205

README.md

@@ -210,4 +210,4 @@ The edges are documented, not denied — the full list with mechanisms is in the
 - Policy documents govern planning; the tool plane still reads CLI flags.
 - The MCP gate binds the MCP surface, not the host: an agent with its own file tools in the run directory could forge the approval decision. The trust boundary is the working directory, as it is for the Slack workspace.
 
-Version `0.1.7` · [changelog](CHANGELOG.md) · [roadmap](ROADMAP.md) · [website](https://codegraphcontext.github.io/GraphARC/) · MIT
+Version `0.1.8` · [changelog](CHANGELOG.md) · [roadmap](ROADMAP.md) · [website](https://codegraphcontext.github.io/GraphARC/) · MIT

docs/cookbook/01-basics.md

@@ -14,7 +14,7 @@ projection instead and says which fields it dropped.
 `tests/test_cookbook_basics.py` reproduces every recipe here and asserts these
 exact strings, so the page cannot rot quietly.
 
-Verified against `grapharc 0.1.7`, Python 3.14.6, `langgraph 1.2.9`,
+Verified against `grapharc 0.1.8`, Python 3.14.6, `langgraph 1.2.9`,
 `langchain-core 1.5.1`, `pydantic 2.13.4`.
 
 Each snippet is a complete file. Save it and run it; nothing carries over between
@@ -41,7 +41,7 @@ uv run grapharc --version
 Output:
 
 ```
-grapharc 0.1.7
+grapharc 0.1.8
 ```
 
 Everything below uses only the base install — no API key, no network, no optional

docs/cookbook/06-serving-and-ops.md

@@ -1062,7 +1062,7 @@ with TestClient(app) as client:
 ```
 
 ```
-health : {'status': 'ok', 'version': '0.1.7', 'graphs': ['qa']}
+health : {'status': 'ok', 'version': '0.1.8', 'graphs': ['qa']}
 created: 201 queued
 status : succeeded
 answer : Budgets cap iterations, tokens and time.
@@ -1259,7 +1259,7 @@ graphs   : qa
 ctrl-c to stop
 
 $ curl -s localhost:8124/healthz
-{"status":"ok","version":"0.1.7","graphs":["qa"]}
+{"status":"ok","version":"0.1.8","graphs":["qa"]}
 
 $ curl -s -X POST localhost:8124/sessions -H 'content-type: application/json' \
       -d '{"graph":"qa","input":{"question":"how do budgets work?"}}'