To be honest, I wasn't that sure about them either. Aside from a one-semester class in modern French history, I don't have the knowledge or the information as to what the proper epilogue would be. If you have any suggestions as to that or in regards to anything else in the story, I'd love to hear them while I polish the final draft.
Here's one possible outcome: without de Gaulle, the British and Americans successfully impose AMGOT on France and, while decidedly unhappy about it, the non-Communist resistance movements grudgingly accept it as they consider it a lesser evil to the risk of Communists refusing to relinquish their strongholds to civilian authorities. The Communists themselves are, predictably, even more reluctant to submit to an Ally-controlled government, but they receive orders from Moscow (Stalin was uninterested in having France go Communist at that point). Your idea to make Pierre Koenig the first post-liberation prime minister is a good one.
Now, reconstruction aside, one of the most pressing issues facing the French government was decolonization. In Indochina, the pro-independence forces were under de facto control of the country, and everyone who took a lucid look at the situation (such as Leclerc in OTL) understood that it was a question of when and in what conditions France granted Vietnam, Laos and Cambodia formal independence, not if. In your TL I suggest Koenig have gen.
de Lattre de Tassigny be sent as plenipotentiary to oversee an orderly, negociated transfer of power. Let's say that by 1949 the three countries of former French Indochina are independent (with Ho Chi Minh as president of the Republic of Vietnam).
The next step is dealing with Algeria, which is an altogether thornier problem. In OTL, a demonstration by Arabs was brutally repressed on the same day as Germany surrendered, 8 May 1945. Hopefully the butterflies from your POD may lead to that demonstration not taking place, but the Pieds-Noirs would still be at loggerheads with the Arab majority. I can't at the moment think of how things could turn out, but the French government could do worse than putting gen.
Georges Catroux in charge (he had already been governor-general of Algeria between 1943 and 1944).
Now, as regards European integration, my personal guess is that it would, in fact, proceed along much the same lines as in OTL until the signature of the Treaty of Rome, so there
would be an EEC. Beyond that, if we have the Fourth Republic hold together after 1958 (without an Algerian crisis to destabilize it and de Gaulle to take over), it may in fact advance faster than in OTL: de Gaulle was unenthusiastic about political integration and, when push came to shove in 1965, paralyzed the EEC institutions by having French representatives boycott them, leading to the so-called Luxemburg Compromise. For nearly 20 years, political integration remained stalled, and only economic integration inched forward, until the implementation of the Single European Act. In your TL,
Walter Hallstein, then president of the European Commission, would likely get his way, and political integration would proceed apace.
Obviously, another butterfly is that the British application (alongside those of Ireland and Denmark) would be accepted the first time around, in 1961, so all three countries would become members in 1962.
I'm not sure about the European Defense Community; for simplicity's sake, you may assume that it's defeated in your TL as well (possibly as a result of a stronger Communist presence at the French national assembly, to make up for the weaker Gaullists), so that NATO is set up on schedule.