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* fix(bundler): reject a top-level non-mapping bundle-catalogs.yml in _merge_config
_merge_config silently ignored a top-level non-mapping document (a YAML list
or scalar) — `data.get("catalogs") if isinstance(data, dict) else None` made
it fall through to the built-in default stack — while the sibling reader of
the SAME file (commands_impl/catalog_config._read) raises "expected a mapping
at the top level". #3623 already made the inner non-list `catalogs` value
agree between the two readers; this closes the remaining top-level-shape gap
so both readers reject the same malformed documents.
An empty file (load_yaml coerces to {}), absent `catalogs`, and `catalogs: []`
all remain no-ops.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix(bundler): reject FALSY non-mapping catalog configs (parse raw, not load_yaml)
Address review (Copilot on #3659): the top-level guard used the shared
load_yaml, whose `yaml.safe_load(...) or {}` coerces a FALSY top-level
document ([], false, 0, '') to {} BEFORE the isinstance check — so those
malformed configs silently fell back to the built-in defaults instead of
raising. Only truthy non-mappings ([a,b], 42) were caught.
Parse the raw document in both readers of bundle-catalogs.yml
(models/catalog._merge_config AND commands_impl/catalog_config._read):
an empty document (None) stays a no-op, but every non-mapping top level —
falsy or truthy — now raises "expected a mapping at the top level". This
keeps the two readers genuinely consistent. Tests cover the falsy cases for
both.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix(bundler): correct load_yaml so only empty documents become {} (not falsy non-mappings)
Address review (Copilot re-review of #3659): the previous fix duplicated
YAML parsing + exception wrapping inline in two readers, bypassing the
centralized yamlio helper. Instead, correct the root cause in load_yaml.
load_yaml did `yaml.safe_load(...) or {}`, which coerced ANY falsy result
(None empty-doc, but also [], false, 0, '') to {} — contradicting its own
docstring ("{} for an empty document") and hiding malformed non-mapping
configs from callers' shape guards. Change to `{} if data is None else data`
so only an empty document becomes {}; a non-mapping top level is returned
as-parsed.
Revert the inline raw-parse in models/catalog._merge_config and
commands_impl/catalog_config._read back to the centralized load_yaml; their
existing `isinstance(data, dict)` guards now correctly reject falsy
non-mappings too. All three load_yaml callers (these two + manifest.from_dict)
already guard the top-level shape, so none regresses. Falsy-case tests for
both readers retained.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* fix(bundler): distinguish an empty YAML document from an explicit null in load_yaml
Address review (Copilot on #3659): yaml.safe_load returns None for BOTH an
empty document AND an explicit null scalar (`null`/`~`), so mapping None to {}
still let a top-level null bundle-catalogs.yml fall back to defaults instead of
being rejected by the mapping guard.
Use yaml.compose (which yields a node only for a non-empty document) to tell
the two apart: a truly empty document becomes {}, while an explicit null is
returned as None so the callers' isinstance(dict) guard rejects it like any
other non-mapping. Drop the now-incorrect `if data is None: return []`
short-circuit in catalog_config._read so an explicit null reaches that guard.
Tests cover null/~ for both readers plus empty/comment-only no-op.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>