[Halo] Forerunner Timeline as I understand it

So far, this is how I picture the events to have taken place during the Human-Forerunner and Forerunner-Flood Wars

• Human-Forerunner War
• Ur-Didact defeats the Humans and devolves them
• Discovery of the Flood by the Forerunners
• Brief Forerunner-Flood War
• Commissioning of Halos to eradicate the Flood should they emerge again
•  Ur-Didact opposes to this for his belief in the Mantle and eventually exiled on Erde-Tyrene
• Bornstellar discovers Ur-Didact's Cryptum and wakes him
• The two travel to various scarred Worlds and Ur-Didact bestows his memories and knowledge to Bornstellar via a Brevet Mutation
• They are found by Master Builder Faber who exiles Ur-Didact to a Flood invested planet
• Bornstellar is returned to Forerunner territory and becomes the new Didact
• Forerunner capital attacked by Mendicant Bias and Faber executed due to War Crimes
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• Bornstellar finds Mendicant's installation (Halo 7), commandeers it to obtain the Composer
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• [Unknown Events]
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• Flood threat arises again
•  Ur-Didact returns and prepares for battle
• Uses human population on Halos to compose an army of Prometheans
• The Librarian seriously abhors this act and imprisons the Ur-Didact on Requiem
• The Librarian completes Indexing of Sentient Species
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• [Unknown Events .. but include implantation of Genesong to John-117's ancestors, possibly with an imprint of Forthencho (wild wild guess since he was the greatest threat to the Ur-Didact)]
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• (Presumably) Bornstellar activates the Halo Array to cleanse the Galaxy