Telegram DM chat_id == user_id for every bot, so a `chat_id` route meant to
pin a user's DM with the SHARED bot to profile `ops` also captured that
user's DM with team_b's dedicated bot: the turn, session key, state.db and
secrets were ops's while the reply left via team_b's transport.
`ProfileRoute` gains an optional `bot_profile` discriminator (None = the
default profile's bot) and `matches()` requires it to equal the receiving
adapter's owner profile. `build_source` passes `_owner_profile` and stamps it
as the fallback profile for secondary adapters; `_profile_name_for_source`
derives it from the transport ref for sources built elsewhere.
Secondary→secondary routes remain possible by naming the bot explicitly.
Salvages the discriminator idea from #105040 and #105049 in a smaller shape
(no bot-username sniffing across adapter internals; the owning profile is
already declared at `set_owner_profile`).
Co-authored-by: 0xAlyDev <agentai891@gmail.com>
Co-authored-by: Ahmett101 <Ahmett101@users.noreply.github.com>
Teknium
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