fix(installer): correct a false security claim, and clear the should-fix list

CLIENT IP / SPOOFABILITY. docs/geenforce-api-cutover.md claimed that removing the
IIS rewrite rule made the allowlist fail closed and that it does NOT become
spoofable. The opposite is true. IIS never sets X-Forwarded-For on its own; the
rule is the only thing that does. Remove it and IIS still forwards whatever
X-Forwarded-For the CALLER sent, waitress trusts it because it arrives from
127.0.0.1, and remote_addr becomes attacker-controlled - so a token-less caller
can fetch manifests from anywhere on the network. The document and the
_trusted_client_ip docstring now say so, waitress runs with
--trusted-proxy-count=1, and stage 5 checks the rule is actually live rather than
assuming it. The wizard question is rephrased to something an operator can verify
with their network team instead of guessing at.

NON-ASCII. The style gate only ever checked .py/.vue/.js/.ts, so documentation
accumulated em-dashes, arrows and box-drawing characters against this repo's own
convention - including in files added this week. Cleaned, and the gate now uses
INCLUDES_ALL so Markdown, JSON and YAML are covered.

PLUGIN DEFAULTS. The wizard pre-ticked measuringtools and printedparts, both of
which ship default_enabled=false, so every site taking the defaults installed and
enabled them against their manifests. Inno has no JSON parser so the list must be
hardcoded, but tests/test_installer_defaults.py now fails when it drifts.

UPGRADES. The payload copy merges, so a plugin dropped from a site's profile kept
its code forever - which defeats a lean build and leaves core's optional-import
guards succeeding for a plugin the site no longer has. Stale plugin directories
are now deregistered and removed before the copy.

add-plugin used 'plugin install', which for the five default_enabled=false
plugins left them installed but DISABLED - and printed a green success line
anyway. It now goes through apply-profile, and the success line is gated on the
exit code. Invoke-Flask records its own exit status, because $LASTEXITCODE keeps
a stale value when flask.exe is missing and no native command runs.

CHARSET. The utf8mb4 compiler hook lived inline in migrations/env.py, so it
covered the CORE chain only: plugin baselines inherited the server default, which
on a latin1 server means two charsets in one database. It is now
shopdb/utils/mysql_charset.py, imported by both, and preflight reports the
database's default charset.

BACKUP HONESTY. The dump was described as 'all of your asset data'. Uploaded
branding and floor-map images live in instance\ on disk, not in the database, so
a restore from the .sql alone comes back with no map. backup now archives
instance\ alongside it and says both are needed.

VERSIONING. AppVersion was hardcoded at 0.9.0 while the product, the frontend and
the newest tag said 0.7.0 - and 0.9.0 collides with a retired contract version.
Both builders now generate version.iss from shopdb/__init__.py.

Smaller: rollback overwrites .env before deleting it, as uninstall already did;
appcmd unlocks are scoped to this site's location rather than server-wide, with
the wide unlock as a fallback; DEVELOPMENT-SETUP says Python 3.14; the README
plugin list gains printedparts; prune-schema --force is documented as
first-provisioning-only; HTTPS is documented as not-the-default with the steps to
add it; the DBA SQL is on the wizard's database page; the features page says
unticking does not remove an installed feature; and the installer README states
that bundle-lock cannot vouch for the exe itself - that needs signing or an
out-of-band hash, neither of which is wired up.

migrations/PRODUCTION_MIGRATION_GUIDE.md

@@ -13,10 +13,10 @@ This guide documents the process for migrating data from the legacy VBScript Sho
 ### New System (Flask)
 - Core `assets` table (unified asset registry)
 - Plugin-specific extension tables:
-  - `equipment` (equipmenttypeid → equipmenttypes)
-  - `computers` (computertypeid → computertypes)
-  - `printers` (printertypeid → printertypes)
-  - `network_device` (networkdevicetypeid → networkdevicetypes)
+  - `equipment` (equipmenttypeid -> equipmenttypes)
+  - `computers` (computertypeid -> computertypes)
+  - `printers` (printertypeid -> printertypes)
+  - `network_device` (networkdevicetypeid -> networkdevicetypes)
 
 ## Key Mappings
 

migrations/env.py

@@ -4,27 +4,12 @@ from logging.config import fileConfig
 from flask import current_app
 
 from alembic import context
-from sqlalchemy.ext.compiler import compiles
-from sqlalchemy.schema import CreateTable
 
-
-# Force every table the migrations create on MySQL to utf8mb4 + DYNAMIC row
-# format. Without this a fresh `flask db upgrade` inherits the server default
-# charset, so a box whose default is latin1 (common on older MySQL) silently
-# builds a latin1 schema that drifts from the utf8mb4 production target. The
-# DYNAMIC row format also keeps utf8mb4 indexes under the 767-byte prefix limit
-# on pre-5.7 InnoDB. Scoped to the mysql dialect so the SQLite test DB is
-# untouched.
-@compiles(CreateTable, "mysql")
-def _mysql_create_table_utf8mb4(element, compiler, **kw):
-    sql = compiler.visit_create_table(element, **kw)
-    if "CHARSET" not in sql.upper():
-        sql = sql.rstrip().rstrip(";")
-        sql += (
-            " ENGINE=InnoDB DEFAULT CHARSET=utf8mb4"
-            " COLLATE=utf8mb4_unicode_ci ROW_FORMAT=DYNAMIC"
-        )
-    return sql
+# Registers the compiler hook that forces utf8mb4 + DYNAMIC on MySQL. Imported
+# for the side effect, and shared with the PLUGIN chains via
+# shopdb/plugins/alembic_template.py - it used to live here, so it covered core
+# only and plugin baselines inherited the server default charset.
+import shopdb.utils.mysql_charset  # noqa: F401
 
 # this is the Alembic Config object, which provides
 # access to the values within the .ini file in use.