fix(rovodev): guard non-string prompt names when merging prompts.yml

[jawwad-ali]

Problem

RovodevIntegration._read_prompts_yml documents its contract:

Returns an empty list if the file is missing, malformed, or contains no valid prompt entries.

But it filters only at the entry level (isinstance(item, dict)) — it never validates the entry's name. _merge_prompt_entries then does:

name = entry.get("name", "")
if name in generated_by_name:      # <-- dict membership test

.rovodev/prompts.yml is user-editable, so a YAML sequence or mapping name reaches that unhashable-key lookup.

Reproduction on current main (bf88c9f)

name=list     -> TypeError: unhashable type: 'list'
name=mapping  -> TypeError: unhashable type: 'dict'
name=int      -> OK
name=null     -> OK

Only the unhashable shapes crash — the classic gap this repo's shape-guard vein targets.

The failure escapes setup() as a raw traceback, so every specify init, integration install and integration upgrade for rovodev on that project aborts, and the user's prompts.yml is never rewritten.

Fix

A non-string name can never match a generated entry, so treat it like any other unmatched entry and preserve it verbatim:

if not isinstance(name, str):
    merged.append(entry)
    continue

Verified all shapes now succeed with the user's entry intact:

name=list          -> OK   user entry preserved=True  total=11
name=mapping       -> OK   user entry preserved=True  total=11
name=int           -> OK   user entry preserved=True  total=11
name=null          -> OK   user entry preserved=True  total=11
name=matching str  -> OK   user entry preserved=True  total=10   <-- still merges

No breaking change. A string name takes the identical replace-in-place path (the matching case still collapses to 10 entries rather than 11). The only inputs whose behaviour changes are ones that previously crashed.

Verification

• Fail-before / pass-after: 2 new-vs-baseline failures with the source reverted → 16 passed with the fix.
• Parametrized over both unhashable shapes (sequence, mapping).
• Scoped regression over tests/integrations: no new failures vs a clean-main baseline captured on bf88c9f9 (18 pre-existing, Windows symlink-privilege).
• uvx ruff@0.15.0 check src tests → clean

---

Written with assistance from Claude Code. Bug found, reproduced, and verified by me on current main.