Install error messages list stale supported platforms

[GautamSharma99]

Summary

Some runtime install guidance still lists only the older platform set:

codex|claude|copilot|opencode

But the CLI currently accepts more install platforms:

codex|claude|copilot|opencode|openhands|factory-droid|antigravity

This makes setup/debugging confusing for users on OpenHands or Factory Droid, especially when they hit an install-related error and the
suggested recovery command omits their platform.

## Current behavior

apps/cli/main.ts advertises and parses the newer install platform list:

install --platform codex|claude|copilot|opencode|openhands|factory-droid|antigravity

But libs/storage/sqlite/repository.ts still has older hardcoded messages:

Run greplica install --platform <codex|claude|copilot|opencode> --embedding local

This appears in:

- requireRepo()
- requireWorkingScope()
- requireMainScope()

## Reproduction

From a repo where Greplica is not installed, run a graph command, for example:

greplica graph read

Observed error suggests:

Run greplica install --platform <codex|claude|copilot|opencode> --embedding local

## Expected behavior

Install recovery guidance should include all supported install platforms, or derive the platform list from a shared source so CLI usage and
runtime errors cannot drift.

## Suggested fix

- Update the stale messages in libs/storage/sqlite/repository.ts
- Prefer centralizing the supported install platform display string instead of duplicating it manually
- Add a regression check so install/platform guidance stays consistent with CLI parsing

## Acceptance criteria

- Install-related errors mention OpenHands and Factory Droid
- CLI usage and runtime recovery messages do not disagree
- A test covers the platform guidance string or error output

[sridhar852002]

@kushalpatil07 Looks like this has already been fixed on main and is a duplicate of #127.

The stale greplica install --platform <codex|claude|copilot|opencode> command referenced in this issue (libs/storage/sqlite/repository.ts) was updated in cd363e2 ("fix stale install platform guidance", #127). Instead of hardcoding the platform list, it now uses the shared definitions in libs/install/paths.ts (installPlatforms → installPlatformUsage → installCommandSuggestion). All three "not installed / scope missing" error messages in repository.ts now reference installCommandSuggestion.

Because the command is generated from installPlatforms, new platforms are picked up automatically. For example, after Cursor was added in e8a0816, the command now correctly shows:

codex|claude|copilot|cursor|opencode|openhands|factory-droid|antigravity

There is still one outdated location, but it's unrelated to this issue. The transcript bundle usage text and parseTranscriptBundlePlatform in apps/cli/main.ts still list only codex|claude|copilot|opencode. That's already being tracked in #120 / #129 (with PR #121 in progress).

I'd close this as a duplicate of #127.

[kushalpatil07]

Closing as resolved by #127, which centralized install-platform guidance and is merged on main.