`discover_entities` was deduping the convo_scanner results against the
manifest/git scan with a case-sensitive key, while every other dedup
path in the pipeline (`_merge_detected`, `miner.add_to_known_entities`)
uses case-insensitive matching. A project named `foo` in a manifest
plus `Foo` as a Claude Code `cwd` variant would surface as two review
entries instead of collapsing to one.
Fix keys `by_name` by `name.lower()` while preserving the first-seen
casing, matching the rest of the pipeline. Flagged by Copilot on #1175.
Regression test asserts a manifest project + a CamelCase-variant convo
cwd for the same real project collapse to one entry.
Igor Lins e Silva
55c83e9f3d