fix: remove one machine's addresses and paths from the shipped defaults

The plugin was developed against an Ollama on a private LAN address, and that
address had reached places that ship:

- the `config` parameter description the MODEL reads on every request;
- the commented example in `cordis.patch.yml`, the layer every profile applies;
- `scripts/smoke.mjs` and `scripts/measure.mjs` endpoint defaults;
- both measure scripts' default workspace, which was an absolute local path
  and named a private repository;
- README examples and test fixtures.

All of them now use `http://127.0.0.1:11434`, which is Ollama's documented
default and belongs to no particular machine — kept rather than emptied because
`validateSettings` requires an http(s) URL, so an empty default would turn every
call into INVALID_SETTINGS until someone configured it. Test fixtures use
192.0.2.10 instead: TEST-NET-1 is reserved for documentation and cannot point at
a host anybody runs. The `focus` and `config` examples are generic, and the
workspace defaults are the working directory.

Two script bugs surfaced once the defaults stopped pointing at a live box, and
are fixed here. `measure.mjs` built its own configuration literal, which was ten
fields short of the schema — harmless while nothing validated it, and a refused
call the moment `execute` began checking the section it was handed; it now
resolves its configuration through the plugin's own `Config`, so it cannot drift
again. It also crashed on a failed search (`first.index.scanned` of a result
that has no index) instead of reporting the endpoint it could not reach, which
is now the ordinary case. `scope-measure.mjs` divided by a scope that does not
exist in any workspace without focus markers, and now says so.

Also corrects `cordis.patch.yml`'s description of what the row registers: in
0.1.7 the exported `Config` is the settings registration, not a namespace on
`ctx.settings`.

scripts/smoke.mjs

@@ -19,7 +19,10 @@ import { rankChunks } from '../lib/rank.js'
 import { RecallIndex } from '../lib/store.js'
 import { listCodeFiles } from '../lib/walk.js'
 
-const API_BASE = process.env.RECALL_API_BASE ?? 'http://10.50.1.2:11434'
+// The endpoint to check against. The default is the Ollama convention, which
+// is what the plugin's own schema defaults to; point RECALL_API_BASE at your
+// own host when it is somewhere else.
+const API_BASE = process.env.RECALL_API_BASE ?? 'http://127.0.0.1:11434'
 const MODEL = process.env.RECALL_MODEL ?? 'unclemusclez/jina-embeddings-v2-base-code:latest'
 const DIMENSIONS = Number(process.env.RECALL_DIMENSIONS ?? 768)