| Naedre |
No, Healer's Blessing specificly relates to "cure" spells. This is typically understood to mean any spell with the word "cure" in the title (cure light wounds, mass cure moderate wounds, etc) but not other abilities that restore HP or even healing spells that do not have "cure" in the title (Heal, for example).
So It does not apply to Channel Energy because it is not named "cure" and because it is not a spell.
Other HP restoring spells besides the "Cure" line do not apply for the same reason that good clerics and oracles cannot spontaneously cast anything but the "cure" line.
Note that all healing spells are defined as "Conjuration (Healing)", and there is no such thing as "Conjuration (Cure)" spells. If Healer's Blessing applied to everything, it state "Conjuration (Healing)" or maybe just "Healing" in the domain ability description, but Healer's Blessing specificly states "cure" spells.