feat(query): generate peer-resolve helpers for query builders

[ernado]

Closes #283.

Problem

Query builders that take a peer required the caller to resolve the peer by hand first:

p, err := peer.Resolve(resolver, "telegram")(ctx)
if err != nil {
    // ...
}
query.NewQuery(raw).Messages().GetHistory(p).ForEach(ctx, cb)

Change

The itergen generator now emits a <Method>Resolve(from string) sibling for every query builder that has a required tg.InputPeerClass parameter, so the peer can be addressed by domain / phone / deeplink directly:

query.NewQuery(raw).Messages().GetHistoryResolve("telegram").ForEach(ctx, cb)

• The package QueryBuilder now carries a peer.Resolver, defaulting to peer.DefaultResolver(raw) and overridable via WithResolver(...) — mirroring message.Sender.
• The peer is resolved lazily inside Query(ctx, …) and cached; resolve errors are wrapped so context cancellation surfaces correctly.
• from accepts the same inputs as peer.Resolve (@telegram, telegram, t.me/telegram, tg://resolve?domain=…, phone numbers).
• Generated for all 8 peer-taking messages builders: GetHistory, GetRecentLocations, GetReplies, GetSavedHistory, GetUnreadMentions, GetUnreadPollVotes, GetUnreadReactions, Search.
• Packages without peer methods (photos, participants, dialogs, …) are unchanged.

Generator-only edits

Per CLAUDE.md, only the generator was hand-edited; messages/queries.gen.go is regenerated. make generate is stable (no further diff).

Testing

• go test -race ./telegram/query/... — green, including new resolve_test.go covering the default-resolver path and a custom WithResolver path.
• Added a runnable ExampleQuery_resolveHistory.
• go build ./..., go vet ./telegram/query/... clean.

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.26%. Comparing base (38b2b54) to head (bf78fcb).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1779      +/-   ##
==========================================
+ Coverage   71.24%   71.26%   +0.01%     
==========================================
  Files         503      503              
  Lines       23593    23602       +9     
==========================================
+ Hits        16809    16819      +10     
- Misses       5551     5552       +1     
+ Partials     1233     1231       -2     

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