feat(pipeline): the pure pipeline, checked against its goldens

The modules that turn a frozen range into passes and passes into a
verdict: :Schema, :Tools (the DENY, git and base lists, a leaf, so the
config and the pool both read them), :Plan, :Artifact, :Inventory,
:Dispositions, :State, :Normalize, :Stream, :Prompt, :Config, and the URL
half of :PgWire. Units, jobs, results, the config and the claude stream
stay JSON from end to end, so every key keeps its place; :Text gives JSON
values truthiness, get, ==, membership and Str(), and throws Dyn::Error
under a name for each kind of unexpected data.

Exactness where the bytes are seen:
- the stream classifiers are hand-written scanners with case-insensitive
  folds (the Kelvin sign is a k), Unicode \b and \s, and `.` stopping at
  \n; the SQL call detection takes `<exe> sql` with any path before it;
- config problems carry the JSON scanner's and the UTF-8 decoder's own
  texts, positions included;
- a float total is Neumaier's compensated sum, and the build passes
  -ffp-contract=off: -march=native would fuse a*b+c;
- `crafter-review inventory` and `config` print what the goldens record,
  byte for byte (the fixture and 14 configs, broken ones included); a
  message names this binary as the command to run.

tests/Goldens: the recorded answers over the fixtures next to them (the
commits fixture, a rich versioned series with CRLF, a folded subject,
Markdown headings in and out of fences, the code-key rewrites); the suite
compares 2304 results as DumpFile writes them, so a key out of order fails
too. All agree.

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

tests/Goldens/fixture/code-keys/context/0002-greet-by-name-and-document-it.patch

@@ -0,0 +1,55 @@
+From 2222222222222222222222222222222222222222 Mon Sep 17 00:00:00 2001
+From: Jorijn van der Graaf <jorijnvdgraaf@catcrafts.net>
+Date: Wed, 24 Sep 2026 10:05:00 +0200
+Subject: [PATCH 2/2] greet by name and document it
+
+The greeting takes a name now and the farewell mirrors it; the README
+documents both calls. Callers that pass nothing still get the old text.
+
+The format follows the greeting spec [1].
+
+[1] https://example.org/greeting-spec
+---
+ README.md | 4 ++++
+ hello.py  | 8 ++++++--
+ 2 files changed, 10 insertions(+), 2 deletions(-)
+ create mode 100644 README.md
+
+diff --git a/README.md b/README.md
+new file mode 100644
+index 0000000..d4e5f6a
+--- /dev/null
++++ b/README.md
+@@ -0,0 +1,4 @@
++# hello
++
++Call `greet(name)` or `farewell(name)`; without a name both return the
++plain text.
+diff --git a/hello.py b/hello.py
+index a1b2c3d..b7c8d9e 100644
+--- a/hello.py
++++ b/hello.py
+@@ -1,9 +1,13 @@
+ """Greetings, by name."""
+ 
+ 
+-def greet():
+-    return "hello"
++def greet(name=None):
++    if name is None:
++        return "hello"
++    return "hello " + name
+ 
+ 
+@@ -7,3 +11,5 @@ def greet():
+-def farewell():
+-    return "bye"
++def farewell(name=None):
++    if name is None:
++        return "bye"
++    return "bye " + name
+
+base-commit: 0000000000000000000000000000000000000000
+-- 
+2.51.0
+